Maroc exploration du Gaz/pétrole lourd

Rappel du premier message :

voila ce qui clarifie l´installation de Chevron tant polemiquée..3 new licenses offshore

Citation :

Tuesday, 22 January 2013 - 17:54
Chevron Signs Petroleum Deals in Offshore Morocco

  By Saabira Chaudhuri


Chevron Corp. (CVX) has signed petroleum agreements related to three offshore areas in Morocco, a push to expand its footprint in frontier basins.

The oil and gas company has signed the agreements with Morocco's Office National Des Hydrocarbures Et Des Mines which, once awarded, will allow Chevron to acquire seismic data and conduct studies in deepwater areas known as Cap Rhir Deep, Cap Cantin Deep and Cap Walidia Deep located between 60 miles and 120 miles west and northwest of Agadir, Morocco. The areas encompass about 11,300 square miles with average water depths ranging from between 330 feet to 14,700 feet.

"This is an opportunity for Chevron to expand its already strong presence in the region and allows us to acquire further knowledge about promising geology in an emerging area," said Ali Moshiri, president of Chevron Africa and Latin America Exploration and Production Co.

Chevron has a 75% working interest in the three areas, with the Office National Des Hydrocarbures Et Des Mines holding the remaining 25%.

Chevron and other large oil and gas producers have been suffering the impact of a shaky global economy on oil and gas prices. In November, Chevron reported its third-quarter earnings fell 33%, missing expectations as its oil and gas production was disrupted by maintenance, legal issues and storms, and a refinery fire in California caused a sharp drop in fuel sales.

Earlier this month, the second-largest U.S. oil company by market value said it expects its fourth-quarter profit to rise compared with the previous quarter, benefiting from gains on assets and increased U.S. and international production.

Last month, Chevron said its Australian unit made two more natural-gas discoveries in the Exmouth Plateau area of the Carnarvon Basin, a hydrocarbon basin offshore western Australia.

Shares edged down by 55 cents to $114.69 in recent trading. The stock has risen 7.3% in the past 12 months.

WSJ

Citation :

Chevron Signs Agreement for Exploration Areas Offshore Morocco
Acreage expands Chevron’s footprint offshore Africa

SAN RAMON, Calif., January 22, 2013 – Chevron Corporation (NYSE:CVX) announced that its subsidiary, Chevron Morocco Exploration Ltd,  signed petroleum agreements with Morocco's Office National Des Hydrocarbures Et Des Mines for three offshore areas.

"We look forward to participating in exploration activities in Morocco, which provides Chevron an opportunity to advance our growth strategy in frontier basins," said George Kirkland, vice chairman, Chevron Corporation.

Once awarded, Chevron will acquire seismic data and conduct studies in deepwater areas known as Cap Rhir Deep, Cap Cantin Deep and Cap Walidia Deep located between 60 and 120 miles (100 to 200 kilometers) west and northwest of Agadir, Morocco. The areas encompass approximately 11,300 square miles (29,200 square kilometers) with average water depths ranging from between 330 feet to 14,700 feet (100 meters to 4500 meters).

Ali Moshiri, president, Chevron Africa and Latin America Exploration and Production Company, said, "This is an opportunity for Chevron to expand its already strong presence in the region and allows us to acquire further knowledge about promising geology in an emerging area."

Chevron Morocco Exploration Ltd has a 75 percent working interest in the three areas, with the Office National Des Hydrocarbures Et Des Mines holding the remaining 25 percent.

http://www.chevron.com/chevron/pressreleases/article/01222013_chevronsignsagreementforexplorationareasoffshoremorocco.news

Citation :

Gulfsands optimistic despite Moroccan gas disappointment
Thursday, December 19, 2013 7:56 AM

Gulfsands optimistic despite Moroccan gas disappointment

LONDON, Dec. 19 (UPI) -- Gulfsands Petroleum Chief Executive Officer Mahdi Sajjad said Thursday he was optimistic about commercial gas prospects in Morocco despite a slow start.

Gulfsands, which has headquarters in London, said the first two wells of a four-well program encountered natural gas in the company's Rharb Center permit area but the quantities were less than what was considered commercial.

"With the steep learning curve involved in drilling these wells now behind us and 3D seismic data soon to be available for locating the wells in the rest of our commitment well program, we are optimistic for the prospects of building a successful commercial gas sales business in Morocco," he said in a statement.

Seismic surveys help energy companies get a better understanding of reserve potential. A second phase of five exploration wells is planned in the same area next year.

The CIA World Factbook estimates as of January 2012, Morocco has proven natural gas reserves of 49 billion cubic feet, 98th in the world.
(Source: UPI )

Plus de détails sur les opérations menées actuellement par Gulfsands dans la région du Gharb :

Citation :

Gulfsands Petroleum plc (AIM: GPX), the oil and gas production, exploration and development company with activities in Syria, Morocco, Tunisia, Colombia and the U.S.A. provides the following update on activities underway in Morocco.

Rharb Drilling Programme

The first phase of drilling operations on the Company's Rharb Centre Permit, comprising the drilling of four commitment shallow gas exploration wells, commenced on the 23rd October 2013, using the recently imported COFOR SAS Cabot 750 drilling rig.

These exploration wells are part of a nine well commitment inherited with the acquisition of Cabre Maroc Limited in January of this year. This first phase of exploration wells have been designed to test distinct Miocene-aged sandstone reservoirs located at depths between 750 and 1600 metres vertical depth below ground level. These exploration targets have been identified from limited legacy 2D seismic data.

A further five commitment gas exploration wells comprising the second phase of operations will be drilled during 2014 on the Rharb Centre Permit. These wells will be located with the benefit of a recently completed 220 square kilometre 3D seismic survey (see Seismic Operations below).

Operations have now been completed on two of the four wells that represent the first phase of our nine well commitment programme. Both wells were drilled within time and budget expectations.

The Al Krima 1 well ("AKR-1") was drilled to a total vertical depth of 1613 metres Measured Depth Below Rotary Table ("m MDBRT") over a period of 21 days. Three significant sand bodies were encountered within the well at depths of 1141, 1410 and 1477 m MDBRT. However, in spite of gas shows being observed during the drilling of these sands, all sand units were subsequently evaluated to be predominantly water bearing, each containing an average gas saturation of less than 10%. Accordingly, AKR-1 was plugged and abandoned as a non-commercial gas discovery.

The post drill review of the well result suggests that a gas accumulation may be present up dip of the AKR-1 well location, but that additional seismic data will be required to determine whether sufficient exploration potential exists to justify further drilling in this area.

The Oulad Zid 1 well ("OZI-1") was drilled to a total vertical depth of 1323 m MDBRT over a period of 22 days. Three sand packages were encountered where strong gas shows were detected whilst drilling. The uppermost package at 1077 m MDBRT was subsequently evaluated from wire line log interpretations to contain gas saturations of 40-45% within a total net pay zone of less than 2 metres. The two deeper sand packages commencing at 1193 m MDBRT comprised a total of 16 metres of net sand of excellent reservoir quality, however these sand packages were evaluated as predominantly water bearing. Following a technical and economic evaluation, it was determined that the OZI-1 gas discovery would not represent a commercially viable operation and therefore the well was plugged and abandoned as a non-commercial gas discovery.

The deeper sands encountered within the well are attractive reservoir targets for future exploration wells. The recently acquired 3D seismic survey covers the OZI-1 well location and will be used to more fully evaluate the extent and exploration potential of these deeper sands.

The rig will now move to the Beni Fdal 2 ("BFD-2") location, where a vertical gas exploration well will be drilled to 970 m MDBRT to test a significant channel feature identified on 2D legacy seismic data. BFD-2 is located 250 metres away from the 2006 Beni Fdal 1 exploration well, which did not intersect the channel feature but proved the existence of gas at the target horizon depth.

Seismic Operations - Rharb 3D Seismic Survey and Fes 2D Seismic Survey

Acquisition of a 3D seismic survey, covering an area of approximately 220 square kilometres over the highly prospective south-western portion of the Rharb Centre Permit has been completed and the data are currently being processed prior to interpretation. A "fast-track" processed volume of data is expected to be available in January 2014, with final data delivery near the end of Q1 2014. These data were acquired over an area containing numerous structural features and seismic amplitude anomalies identified on legacy 2D seismic data. It is expected that the new 3D seismic data will be of great assistance in selecting future exploration well locations for the second phase of drilling and beyond.

The Fes 2D seismic programme, designed to acquire approximately 650 kilometres of 2D data on the prospective Fes permit, is ongoing and is anticipated to be completed, subject to continued suitable weather conditions, early in 2014. These data will be integrated with existing legacy seismic and full tensor gravity data in order to select a suitable prospect for exploration drilling for light oil.

Mahdi Sajjad, the Company's CEO commented:

"I am very pleased that our management has successfully met the challenge of completing these two wells in this first four well phase of our commitment well programme, thereby enabling us to meet undertakings to the Morocco government inherited in our acquisition of Cabre Maroc Limited in January of this year.

We are encouraged to have confirmed the presence of gas in both wells, albeit in sub-commercial quantities, in wells which were located using legacy 2D seismic data or modest quality and clearly inferior to the 3D seismic data captured in our recently completed programme and which will be used for the location of the five commitment wells to be drilled in the first half of next year. With the steep learning curve involved in drilling these wells now behind us and 3D seismic data soon to be available for locating the wells in the rest of our commitment well programme, we are optimistic for the prospects of building a successful commercial gas sales business in Morocco."

Cairn Energy va reboucher le forage commencé à Foum Draa au mois d'Octobre

Le forage a atteint une profondeur totale de 5255 m , mais n'a pas rencontré des réservoirs. Il existe un système en hydrocarbures mais il faut plusieurs forages pour tomber sur le bon !!

La plate-forme va se diriger vers l'autre prospect "Juby Maritime" en face des Canaries ...

Deux déceptions ! ca commence mal...

c'est normal   

il faut beaucoup creuser avant de trouver !!!

marques a écrit:

c'est normal   

il faut beaucoup creuser avant de trouver !!!

Il faut surtout les laisser explorer tranquille. Les marocains surmédiatisent ces compagnie qui viennent chercher du petrole résultat tout le monde en parle et le mauvais oeil dial mgharba fait des ravages ils pourront même creuser 1000 puits ils trouveront rien.

Citation :

Citation :

Hydrocarbures : le sous-sol marocain séduit les compagnies étrangères

http://www.leconomistemaghrebin.com/2013/12/21/hydrocarbures-le-sous-sol-marocain-seduit-les-compagnies-etrangeres/

Prospections pétrolières au Maroc : Cairn Energy abandonne un puits après des recherches infructueuses

 20.12.2013 | 19h10


http://m.yabiladi.com/details/21872/

dan a écrit:

marques a écrit:

c'est normal   

il faut beaucoup creuser avant de trouver !!!

Il faut surtout les laisser explorer tranquille. Les marocains surmédiatisent ces compagnie qui viennent chercher du petrole résultat tout le monde en parle et le mauvais oeil dial mgharba fait des ravages ils pourront même creuser 1000 puits ils trouveront rien.

héhéhéhéhé ... 3in lmgharba !!

Des nouvelles de Longreach Oil concernant le puits d'exploration près de Sidi Mokhtar (Essaouira) :

Citation :

Koba-1 Well Reaches TD

LONGREACH OIL AND GAS LIMITED (TSX-V: LOI) ("Longreach"), an independent oil and gas company holding exploration licences in Morocco, is pleased to announce that the Koba-1 exploration well, in its operated licence area in the Essaouira Basin, onshore Morocco, has reached TD and has encountered a potential Lower Liassic sandstone reservoir with gas shows.
The well has been drilled to a Total Depth (TD) of 3100m. The Lower Liassic sandstone was encountered very close to the expected depth and has a gross interval of approximately 45 metres showing reservoir potential. Over this section, gas shows of over 10% were encountered with heavier hydrocarbon components of over C5+. 
After logging the Lower Liassic section, the well was drilled to TD to continue the exploration of the second target of the prognosed Triassic sandstones. No further potential reservoir sections or significant shows were encountered beneath the Lower Liassic.
The Koba structure is the first prospect to be drilled as part of Longreach‘s exploration well programme.  A portfolio of leads and prospects have been identified and, following the results of Koba-1, the outlook for further prospectivity will be reviewed.
Longreach has a 50% operated interest in the Sidi Moktar licence area covering 2,683 square kilometres. Longreach is partnered by ONHYM and MPE (25% carried interest each).
Commenting today, Dennis Sharp, Executive Chairman, said:
"This is a positive start to our operated exploration campaign in the Essaouira Basin, onshore Morocco, which is most encouraging.  The Company is currently evaluating all of the available data in order to determine the testing program for the well.  We look forward to gaining a fuller understanding of the result of the Koba well."
Longreach is working closely with ONHYM, as a committed long-term partner, to unlock the hydrocarbon potential of the region.  

Plus que quelques jours et on sera définitivement fixés sur le potentiel de ce premier puits

Citation :

Kosmos Energy Announces Rig Share Agreement for Exploration Program

DALLAS--(BUSINESS WIRE)--Jan. 2, 2014--

Kosmos Energy Ltd. (“Kosmos”) (NYSE: KOS) announced today that it has entered into a one well rig share agreement with BP plc (LSE: BP) (NYSE: BP) and Maersk Drilling, a unit of A.P. Moller - Maersk Group (CO: MAERSK), for the rig Maersk Discoverer.

The rig is expected to commence drilling operations on the FA-1 (formally Eagle-1) exploration well in the Foum Assaka Offshore block in Morocco during the first half of 2014.

Under the terms of the Agadir farm-out agreement with BP announced in October, BP will fund Kosmos’ share of the well costs, subject to an agreed maximum spend.

Constructed in 2009, the Maersk Discoverer is a sixth generation, ultra-deepwater, dynamically positioned semi-submersible rig capable of drilling to total depths of up to 30,000 feet, and operating in water depths of up to 10,000 feet.

Darrell McKenna, chief operating officer, said, “We are pleased to have finalized the rig share agreement with BP and Maersk Drilling for this highly capable and efficient rig, currently working in the Mediterranean region. In conjunction with our long-term rig agreement for the Atwood Achiever, we have secured the required rig resources to execute on our exploration program beginning in 2014. Based on the current schedule, we expect to spud the FA-1 well in the first half of the year and anticipate operations will take approximately three months to complete.”

Au fait, ces prospection s concernent du conventionnel? et ya t il des gisements de schiste? Si oui sait on le pourcentage que cela représente face au conventionnel. ?.merci d'avance

Nous avons commis une erreur strategique dans ce dossier.
Nous avons attendu trop longtemps pour commencer les prospections, il a fallut commencé quand le petrole coutait 40$ le baril, au lieu de cela, l'etat a du attendre jusqu'a ce qu'on c'est trouvé dans une situation d'urgence et dans une situation qui l'a poussé a donner des parts de 75% au prospecteurs.

La grande erreur est que le Maroc comptait sur ses alliers au Golf, qui nous vendaient cette matiere à prix preferentiels.

D'où tiens tu  cette répartition de 75% pour les sociétés prospecteurs?

Cordialement

25% pour l'état marocain et le reste pour les sociétés d'exploration pétrolières
C'est le prix pour les pousser a venir en masse prospecter au Maroc , c'est la seule solution même parle que avec les gros investissement qu'il faut mettre en œuvre , il faut leur proposer des pourcentages plus que intéressant

farewell a écrit:

D'où tiens tu  cette répartition de 75% pour les sociétés prospecteurs?

Cordialement

pendant une période déterminée d'exploitation, ça change après ...
Ils sont aussi exonéré d’impôt les premières années.

ScorpionDuDesert a écrit:

farewell a écrit:

D'où tiens tu  cette répartition de 75% pour les sociétés prospecteurs?

Cordialement

pendant une période déterminée d'exploitation, ça change après ...
Ils sont aussi exonéré d’impôt les premières années.

Effectivement, il faut prendre en considération la TVA pour calculer la part de chacun;

Donc pour chaque 100$, 20$ iront a l'Etat sous forme de taxes.

De la, il restera 80$.
Le 1/4 ira a l'ONHYM c'est a dire 20$;
Et le partenaire lui aura les 60$ qui reste.

Donc leur part Net est de 60%,
L'Etat touchera 20%,
L'ONYHM 20%.

و ألله أعلم

Hdary a écrit:

ScorpionDuDesert a écrit:

farewell a écrit:

D'où tiens tu  cette répartition de 75% pour les sociétés prospecteurs?

Cordialement

pendant une période déterminée d'exploitation, ça change après ...
Ils sont aussi exonéré d’impôt les premières années.

Effectivement, il faut prendre en considération la TVA pour calculer la part de chacun;

Donc pour chaque 100$, 20$ iront a l'Etat sous forme de taxes.

De la, il restera 80$.
Le 1/4 ira a l'ONHYM c'est a dire 20$;
Et le partenaire lui aura les 60$ qui reste.

Donc leur part Net est de 60%,
L'Etat touchera 20%,
L'ONYHM 20%.

و ألله أعلم

Non pas de TVA les premières années, pas de douanes sur les importations de matériels.
Comme je vous ai dit ça change par la suite.
Ce qu'il faut savoir, d'après tous les experts que j'ai rencontré et qui ont opéré au Maroc: Le risque est énorme. C'est simple, il n'y a pas de pétrole au Maroc exploré   Attendez que des décisions politiques soient prisent

ScorpionDuDesert a écrit:

Hdary a écrit:

ScorpionDuDesert a écrit:

pendant une période déterminée d'exploitation, ça change après ...
Ils sont aussi exonéré d’impôt les premières années.

Effectivement, il faut prendre en considération la TVA pour calculer la part de chacun;

Donc pour chaque 100$, 20$ iront a l'Etat sous forme de taxes.

De la, il restera 80$.
Le 1/4 ira a l'ONHYM c'est a dire 20$;
Et le partenaire lui aura les 60$ qui reste.

Donc leur part Net est de 60%,
L'Etat touchera 20%,
L'ONYHM 20%.

و ألله أعلم

Non pas de TVA les premières années, pas de douanes sur les importations de matériels.
Comme je vous ai dit ça change par la suite.
Ce qu'il faut savoir, d'après tous les experts que j'ai rencontré et qui ont opéré au Maroc: Le risque est énorme. C'est simple, il n'y a pas de pétrole au Maroc exploré   Attendez que des décisions politiques soient prisent  

Idem pour les sous traitants, pas de TVA.

Citation :

http://www.oilvoice.com/n/Gulfsands_Petroleum_provides_an_update_on_activities_underway_in_Morocco/eab2cf857cdc.aspx#gsc.tab=0

mbarki_49 a écrit:

Des nouvelles de Longreach Oil concernant le puits d'exploration près de Sidi Mokhtar (Essaouira) :

LONGREACH OIL AND GAS LIMITED

Citation :

Koba-1 Well Reaches TD

LONGREACH OIL AND GAS LIMITED (TSX-V: LOI) ("Longreach"), an independent oil and gas company holding exploration licences in Morocco, is pleased to announce that the Koba-1 exploration well, in its operated licence area in the Essaouira Basin, onshore Morocco, has reached TD and has encountered a potential Lower Liassic sandstone reservoir with gas shows.
The well has been drilled to a Total Depth (TD) of 3100m. The Lower Liassic sandstone was encountered very close to the expected depth and has a gross interval of approximately 45 metres showing reservoir potential. Over this section, gas shows of over 10% were encountered with heavier hydrocarbon components of over C5+. 
After logging the Lower Liassic section, the well was drilled to TD to continue the exploration of the second target of the prognosed Triassic sandstones. No further potential reservoir sections or significant shows were encountered beneath the Lower Liassic.
The Koba structure is the first prospect to be drilled as part of Longreach‘s exploration well programme.  A portfolio of leads and prospects have been identified and, following the results of Koba-1, the outlook for further prospectivity will be reviewed.
Longreach has a 50% operated interest in the Sidi Moktar licence area covering 2,683 square kilometres. Longreach is partnered by ONHYM and MPE (25% carried interest each).
Commenting today, Dennis Sharp, Executive Chairman, said:
"This is a positive start to our operated exploration campaign in the Essaouira Basin, onshore Morocco, which is most encouraging.  The Company is currently evaluating all of the available data in order to determine the testing program for the well.  We look forward to gaining a fuller understanding of the result of the Koba well."
Longreach is working closely with ONHYM, as a committed long-term partner, to unlock the hydrocarbon potential of the region.  

Plus que quelques jours et on sera définitivement fixés sur le potentiel de ce premier puits

Je trouve bizard que l'on ai plus de nouvelles concernant ce puit.

les analyses des échantillons et des données prélevées prennent un peu de temps pour leur permettre de forer une 2ème puits de confirmation à coup sûr.

le programme d'exploration de Cairn et Kosmos dans l'offshore au large de Boujdour en 2014 :
Cairn intends to announce its preliminary results for the year to 31 December 2013 on Tuesday 18 March 2014. In advance of these results, Cairn is providing information on recent operations and guidance in respect of the Group's trading performance in 2013. This information is unaudited and is subject to further review.

Simon Thomson, Chief Executive, Cairn Energy PLC said:
"Cairn plans to drill nine wells in its 2014 exploration programme across an attractive mix of frontier and mature basins.

Over the last 12 months, Cairn has built a long-term sustainable business. The exploration programme will provide investors with exposure to material growth potential alongside mature basin development and pre-development assets, all against a backdrop of continued balance sheet strength."

Highlights

Citation :

• Frontier basin exploration
  
• Atlantic Margin Operated Programme
  
  
  
  
  • Four wells in total. The currently operating JM-I exploration well, in the Juby Maritime III block, offshore Morocco, will be followed by two wells offshore Senegal and one well offshore West of Ireland
    
  • Cairn and its joint venture partners are continuing to mature plans for the Pitu block offshore North West Greenland
    
  • A 500km2 3D seismic survey is being planned on acreage adjacent to the Spanish Point discovery where an area of ~1,130km2 is the subject of an offer from the Irish Government to convert licence option blocks to an exploration licence (FEL 1/14) (Cairn 38% working interest (WI), Operator)
    
  
  
  
• Atlantic Margin Non Operated Programme
  
  
  
  
  • Planning is under way for one exploration well in the Atlantic Margin in 2014 on the Cap Boujdour Contract Area (Cairn 20% WI) with Kosmos Energy (operator and 55% WI) and the Moroccan National Oil Company (ONHYM 25% WI)
    
  
  
  

Longreach publie les premiers résultats du puits d'exploration foré près de Sidi Mokhtar : conclusion réservoir intéressant d'une épaisseur de 45 m pouvant contenir du gaz, mais quelques difficultés techniques dans le forage dues à la nature géologique des roches traversées par le sol. D'autres analyses sont en cours qui seront suivies par d'autres forages.

Citation :

Significant Natural Gas Occurrence at Koba-1 Well in Morocco

LONGREACH OIL AND GAS LIMITED  (TSX-V: LOI) ("Longreach" or the "Company"), an independent oil and gas company holding numerous exploration licenses in Morocco, is pleased to announce that the Company encountered a significant natural gas occurrence in the Koba-1 well.  Longreach has a 50% operated interest in the Sidi Moktar license area covering 2,683 square kilometres.  Longreach is partnered by ONHYM and MPE (25% carried interest each).
On December 31, 2013, the Company announced that the Koba well had been drilled to a total depth of 3,100 metres and had encountered a gross interval of approximately 45 metres with reservoir potential. Over this section, gas shows of over 10% were encountered throughout the interval with heavier hydrocarbon components of over C5+. The Koba-1 well has now been logged and suspended.
The Koba structure is the first prospect to be drilled as part of Longreach‘s exploration program. A portfolio of leads and prospects has been identified and, following the results of Koba-1, the Company intends to determine the extent of this natural gas occurrence by further drilling.
Additional Technical Comments
As mentioned in our earlier release of December 31, 2013, the Koba-1 well encountered approximately 45 metres of good quality Lower Liassic Jurassic gas charged reservoir commencing at 1830 metres. This assessment has been made on the basis of visual examination of chip samples and side wall cores and from the amount of gas which entered the mud column while drilling and which was recorded by the gas chromatograph. The second drilling objective in the Triassic was not encountered in the section penetrated.
The Lower Liassic reservoir zone is normally overpressured (4500psi) as anticipated from nearby wells and the mud weight was adjusted to effectively handle that pressure. However, at 1873 metres the well experienced a significant influx of salt water at an abnormally high pressure of 6000psi. No other well in this area has encountered such high formation pressures at this depth. In order to control the well, which started flowing, the mud weight was steadily increased to 2.3SG before the well was stabilised enough to continue logging.  Logging operations had to be halted a number of times in order to run back in the hole and recirculate in an attempt to stabilize the flow.  Consequently the Lower Liassic reservoir zone was open to the heavy mud and abnormally high pressures for an extended period of time which resulted in damage to the well bore and significant invasion of the drilling mud into the Lower Liassic reservoir formation.
A normal series of logs were acquired and an MDT tool was deployed in an attempt to obtain reservoir formation pressures and collect gas samples. However, the logs and the MDT tool were not quantitatively effective due to the mud invasion and rugose nature of the wellbore. No gas samples were collected and only a limited number of pressures were obtained.  Twenty side wall cores were collected confirming excellent reservoir quality.
As a result of the significant damage to the reservoir zone, Longreach is unable to reliably quantify the effective porosity, gas saturation or gas composition values for the Lower Liassic reservoir zone. At this time we do not believe that the high pressure water the Koba-1 well encountered is a gas water contact due to the significant differences in pressure between the gas and water-bearing zones.  However, the Koba-1 well has proved that good quality, gas charged reservoir rocks are present thereby confirming the resource potential of the Longreach Sidi Moktar License. We continue to review the data and refine the timing of our follow-up drilling and testing program.

Quand on parle du loup

mbarki_49 a écrit:

Longreach publie les premiers résultats du puits d'exploration foré près de Sidi Mokhtar : conclusion réservoir intéressant d'une épaisseur de 45 m pouvant contenir du gaz, mais quelques difficultés techniques dans le forage dues à la nature géologique des roches traversées par le sol. D'autres analyses sont en cours qui seront suivies par d'autres forages.

LONGREACH OIL AND GAS LIMITED

Citation :

Significant Natural Gas Occurrence at Koba-1 Well in Morocco

LONGREACH OIL AND GAS LIMITED  (TSX-V: LOI) ("Longreach" or the "Company"), an independent oil and gas company holding numerous exploration licenses in Morocco, is pleased to announce that the Company encountered a significant natural gas occurrence in the Koba-1 well.  Longreach has a 50% operated interest in the Sidi Moktar license area covering 2,683 square kilometres.  Longreach is partnered by ONHYM and MPE (25% carried interest each).
On December 31, 2013, the Company announced that the Koba well had been drilled to a total depth of 3,100 metres and had encountered a gross interval of approximately 45 metres with reservoir potential. Over this section, gas shows of over 10% were encountered throughout the interval with heavier hydrocarbon components of over C5+. The Koba-1 well has now been logged and suspended.
The Koba structure is the first prospect to be drilled as part of Longreach‘s exploration program. A portfolio of leads and prospects has been identified and, following the results of Koba-1, the Company intends to determine the extent of this natural gas occurrence by further drilling.
Additional Technical Comments
As mentioned in our earlier release of December 31, 2013, the Koba-1 well encountered approximately 45 metres of good quality Lower Liassic Jurassic gas charged reservoir commencing at 1830 metres. This assessment has been made on the basis of visual examination of chip samples and side wall cores and from the amount of gas which entered the mud column while drilling and which was recorded by the gas chromatograph. The second drilling objective in the Triassic was not encountered in the section penetrated.
The Lower Liassic reservoir zone is normally overpressured (4500psi) as anticipated from nearby wells and the mud weight was adjusted to effectively handle that pressure. However, at 1873 metres the well experienced a significant influx of salt water at an abnormally high pressure of 6000psi. No other well in this area has encountered such high formation pressures at this depth. In order to control the well, which started flowing, the mud weight was steadily increased to 2.3SG before the well was stabilised enough to continue logging.  Logging operations had to be halted a number of times in order to run back in the hole and recirculate in an attempt to stabilize the flow.  Consequently the Lower Liassic reservoir zone was open to the heavy mud and abnormally high pressures for an extended period of time which resulted in damage to the well bore and significant invasion of the drilling mud into the Lower Liassic reservoir formation.
A normal series of logs were acquired and an MDT tool was deployed in an attempt to obtain reservoir formation pressures and collect gas samples. However, the logs and the MDT tool were not quantitatively effective due to the mud invasion and rugose nature of the wellbore. No gas samples were collected and only a limited number of pressures were obtained.  Twenty side wall cores were collected confirming excellent reservoir quality.
As a result of the significant damage to the reservoir zone, Longreach is unable to reliably quantify the effective porosity, gas saturation or gas composition values for the Lower Liassic reservoir zone. At this time we do not believe that the high pressure water the Koba-1 well encountered is a gas water contact due to the significant differences in pressure between the gas and water-bearing zones.  However, the Koba-1 well has proved that good quality, gas charged reservoir rocks are present thereby confirming the resource potential of the Longreach Sidi Moktar License. We continue to review the data and refine the timing of our follow-up drilling and testing program.

Hniya 3lina