Successful Well Testing Operations by Using a Single Trip Retrievable Isolation and Testing Packer in Ghasha Appraisal Well Offshore Abu Dhabi

2016 ◽  
Author(s):  
Jose Jimenez ◽  
Huzefa Slatewala ◽  
David Negron ◽  
Shamshul Huda
Keyword(s):  
Abu Dhabi ◽  
Well Testing

Lessons Learned from Extensive Well Testing Operations in Khuff Formations Offshore Abu Dhabi

2020 ◽  
Author(s):  
Florian Hollaender ◽  
Mahmoud Basioni ◽  
Ahmed Yahya Al Blooshi ◽  
Ahmed Elmahdi ◽  
Sohdy Sayed ◽  
...  
Keyword(s):  
Lessons Learned ◽  
Abu Dhabi ◽  
Well Testing

Fishbone Stimulation Enhances Tight Carbonate Productivity

2021 ◽  
Vol 73 (07) ◽  
pp. 58-59
Author(s):  
Chris Carpenter
Keyword(s):  
Phase 1 ◽  
Carbonate Reservoir ◽  
Growth Strategy ◽  
Abu Dhabi ◽  
Low Permeability ◽  
Successful Implementation ◽  
Well Testing ◽  
Phase 2 ◽  
Carbonate Formation ◽  
Tight Carbonate

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 202636, “Fishbone Stimulation: A Game Changer for Tight Carbonate Productivity Enhancement—Case Study of First Successful Implementation at ADNOC Onshore Fields,” by R.V. Rachapudi, SPE, S.S. Al-Jaberi, SPE, and M. Al Hashemi, SPE, ADNOC, et al., prepared for the 2020 Abu Dhabi International Petroleum Exhibition and Conference, Abu Dhabi, held virtually 9–12 November. The paper has not been peer reviewed. The operator’s first successful installation of fishbone stimulation technology was aimed at establishing vertical communication between layers in a tight carbonate reservoir and maximizing the reservoir contact. Furthermore, the advanced stimulation technology connects natural fractures within the reservoir, bypasses near-wellbore damage, and allows the thin sublayers to produce. This technology requires running standard lower-completion tubing with fishbone subs preloaded with 40-ft needles and stimulation with the rig on site. Introduction The operator plans to develop tight carbonate reservoirs as part of its production growth strategy. Field Q is a 35×15-km field under development with a phased approach. Phase 1 was planned and production began in 2014. Phase 2 is being developed by drilling wells using the pad concept. Reservoir A, a tight carbonate formation with low permeability ranging from 1 to 3 md and porosity from 15 to 25%, is part of Phase 2 development. The aver-age thickness of Reservoir A is approximately 90 ft across the field, with seven sublayers. The major challenge of Reservoir A development is poor vertical communication and low permeability. Based on appraisal-well data, the average production rate per well is approximately 200 to 400 BOPD with a wellhead pressure of 200 psi. Therefore, appraisal-well testing confirmed the poor productivity of the wells. In addition, the wells are required to produce to the central facilities located in a Phase 1 area 18 km away from Phase 2. In summary, each Phase 2 well is required to be produced against a back-pressure of 500 to 600 psi. Fishbone Stimulation Technology Fishbone stimulation technology is an uncemented-liner rig-deployed completion stimulation system. The liner includes fishbone subs at fixed intervals, and each sub consists of four needles that will connect the sublayers by penetrating into the formation. The typical fishbone completion after installation and jetting the needles in formation is shown in Fig. 1.

scholarly journals Well testing of multiple high H2S reservoirs in an environmentally sensitive area offshore Abu Dhabi

2015 ◽  
Vol 80 (6) ◽  
pp. 438-443
Author(s):  
Hideaki Kuramata ◽  
Manabu Tanaka ◽  
Naohiro Tominaga ◽  
Takeharu Okamoto
Keyword(s):  
Abu Dhabi ◽  
Well Testing ◽  
Sensitive Area ◽  
Environmentally Sensitive

Extensive Well-Testing Operations Provide Insight Into Khuff Reservoirs

2021 ◽  
Vol 73 (02) ◽  
pp. 52-53
Author(s):  
Chris Carpenter
Keyword(s):  
Production Performance ◽  
Abu Dhabi ◽  
Well Testing ◽  
Well Test ◽  
Natural Fractures ◽  
Apparent Lack ◽  
Petrophysical Analysis ◽  
Wide Range ◽  
Well Tests ◽  
Insight Into

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 203441, “Lessons Learned From Extensive Well-Testing Operations in Khuff Formations Offshore Abu Dhabi,” by Florian Hollaender, SPE, Schlumberger, and Mahmoud Basioni and Ahmed Yahya Al Blooshi, ADNOC, et al., prepared for the 2020 Abu Dhabi International Petroleum Exhibition and Conference, Abu Dhabi, held virtually from 9-12 November. The paper has not been peer reviewed. An extensive appraisal campaign was performed in the Khuff reservoirs offshore Abu Dhabi, with multiple appraisal wells drilled in different fields. Those wells were evaluated using detailed logging campaigns and then subjected to well tests, usually through drillstem testing for targeted intervals. The interpretation of well tests, combined with advanced petrophysical analysis, formation-test data, and production logs, provided insight into the nature of the Khuff reservoirs. A wide range of responses was observed, from tight to highly productive, but not necessarily with clear previous indications of deliverability or inflow intervals. Overview of the Khuff Formations The key characteristics of the Khuff formations offshore Abu Dhabi have been well-documented in previous work and can be summarized by the following: Low porosity and permeability carbonate reservoirs, where natural fractures are critical contributors to flow Properties vary widely laterally, with significant uncertainty regarding connectivity Variations in stress and petrophysical properties can be significant and affected by diagenetic and tectonic history These reservoirs present significant challenges for development planning. Previous studies have shown that it can be difficult to relate production performance to standard petrophysical analysis directly and that the presence of fractures - in particular, critically stressed fractures - in the vicinity of the wellbore is an essential factor for production performance. Productivity also was found to vary by several orders of magnitude within the same reservoir depending on the field and lateral location of a given well. The presence of natural fractures has been recognized as a major contributor to flow in tight gas reservoirs; however, this raises several questions related to assessing formation potential. First, the nature of the fractures must be evaluated. Some will contribute to production, while others will remain sealed. Equally importantly, identifying zones with promising porosity developments is not a solid indicator of production expectations. Well-Test Observations With more than 20 drillstem tests performed in the Khuff reservoirs during a 4-year period, the first observation is the wide range of reservoir responses encountered, with an apparent lack of consistency within a given reservoir or field.

Well Testing of Multiple High H2S Reservoirs in an Environmentally Sensitive Area Offshore Abu Dhabi

2014 ◽  
Author(s):  
Fahed Al Ameri ◽  
Mohammed Ahmed Al Kindi ◽  
Hideaki Kuramata ◽  
Yosuke Watanabe ◽  
Naohiro Tominaga
Keyword(s):  
Abu Dhabi ◽  
Well Testing ◽  
Sensitive Area ◽  
Environmentally Sensitive

Cased-Hole Standalone Evaluation Succeeds in the Absence of Openhole Data

2021 ◽  
Vol 73 (02) ◽  
pp. 61-62
Author(s):  
Judy Feder
Keyword(s):  
Water Saturation ◽  
Gas Production ◽  
Carbonate Reservoirs ◽  
Abu Dhabi ◽  
Well Testing ◽  
Gas Reservoirs ◽  
Formation Evaluation ◽  
Potential Reservoir ◽  
Static Modeling ◽  
Well Data

This article, written by JPT Technology Editor Judy Feder, contains highlights of paper SPE 202894, “Cased Hole Standalone Evaluation: Breaking the Barrier To Successfully Evaluate Challenging Deep Carbonate Reservoirs,” by Pradeep Menon and Carey Mills, ADNOC, and Suvodip Dasgupta, SPE, Schlumberger, et al., prepared for the 2020 Abu Dhabi International Petroleum Exhibition and Conference, Abu Dhabi, held virtually from 9-12 November. The paper has not been peer reviewed. Accurate petrophysical evaluations (formation lithology, porosity, and water saturation) are essential in characterizing potential reservoir zones and estimating resources in place. Typically, these evaluations rely on acquisition of openhole logging measurements; however, this is not always possible. The complete paper outlines two examples from tight gas reservoirs in two separate fields offshore Abu Dhabi in which openhole data could not be acquired and petrophysical analysis was undertaken using cased-hole log data. These evaluations successfully identified gas-saturated porous intervals in each well, one of which was successfully flow-tested. Introduction A growing need exists to increase gas production in the UAE. As a result, specific gas-production targets have been mandated from development of currently undeveloped deep gas carbonate reservoirs such as the Permo-Triassic Khuff formation, the middle Jurassic Araej formation, and the Permian Pre-Khuff Unayzah and Berwarth formations. Recent appraisal wells have aimed at evaluating these reservoirs systematically by acquiring a good suite of openhole logs, cutting conventional cores, and conducting well-testing operations. These well data are combined with an evolving regional understanding to better assess and ultimately develop these complex formations. An accurate petrophysical evaluation requires the petrophysicist to develop a realistic evaluation of formation lithology, porosity, and water saturation. These parameters provide the foundations for further work such as static modeling stands, and they must be robust. The Upper Khuff is composed of dolomite occasionally grading to calcareous dolomite with minor interbeds of claystone and anhydrite. In core and cuttings, the dolomite in the uppermost section exhibits a grainstone texture with poor intercrystalline/intergranular porosity. The Lower Khuff is composed of very hard dolomite in part grading to calcareous dolomite, medium-to-dark grey-brown in places, with occasional very-fine-to-medium grainstone texture and very poor intercrystalline porosity. In this paper, the Upper and Lower Araej members are interpreted to have been deposited in an open, marine- circulation shelfal environment, while the Uweinat member is considered to have been deposited in a more- restricted circulation setting with-in a similar shelfal environment. The Barrier Openhole logging generally is the preference for formation evaluation because it represents the simplest environments and benefits from a comprehensive list of available measurements. The variety of tools and diversity of output data available make openhole log acquisition the gold standard for formation evaluation. However, in certain situations in which openhole logging is not possible because of borehole conditions (re-entry of old cased wells, wellbore instability, over-pressure), no option exists other than acquiring petrophysical data in a cased-hole environment.

Multi-Phase Flow Meters for Well Testing-Field Experiences in an ADMA-OPCO Offshore Field, Abu Dhabi

2010 ◽  
Author(s):  
Kalakad Santhanam ◽  
Faisal Hassan M. Al-Marri ◽  
Ali Attas ◽  
Nabeel Al Zarooni ◽  
Ayyaz Khan ◽  
...  
Keyword(s):  
Field Experiences ◽  
Abu Dhabi ◽  
Well Testing ◽  
Phase Flow ◽  
Flow Meters ◽  
Multi Phase Flow ◽  
Testing Field ◽  
Multi Phase ◽  
Offshore Field

Educating Ms. Fatima

1970 ◽  
pp. 56-63
Author(s):  
Tim Walters ◽  
Susan Swan ◽  
Ron Wolfe ◽  
John Whiteoak ◽  
Jack Barwind
Keyword(s):  
Federal Government ◽  
Free Trade ◽  
United Arab Emirates ◽  
Arabian Peninsula ◽  
High Technology ◽  
Emerging Technology ◽  
Abu Dhabi ◽  
Free Trade Zones ◽  
Knowledge Based ◽  
K 12

The United Arab Emirates is a smallish Arabic/Islamic country about the size of Maine located at the tip of the Arabian Peninsula. Though currently oil dependent, the country is moving rapidly from a petrocarbon to a people-based economy. As that economy modernizes and diversifies, the country’s underlying social ecology is being buffeted. The most significant of the winds of change that are blowing include a compulsory, free K-12 education system; an economy shifting from extractive to knowledge-based resources; and movement from the almost mythic Bedouin-inspired lifestyle to that of a sedentary highly urbanized society. Led by resource-rich Abu Dhabi and Dubai, the federal government has invested heavily in tourism, aviation, re-export commerce, free trade zones, and telecommunications. The Emirate of Dubai, in particular, also has invested billions of dirhams in high technology. The great dream is that educated and trained Emiratis will replace the thousands of foreign professionals now running the newly emerging technology and knowledge-driven economy.

Biostratigraphic Constraints on the Shuaiba Formation, Abu Dhabi, United Arab Emirates

2007 ◽  
Author(s):  
Andrew M. Gombos ◽  
Christian J. Strohmenger ◽  
T.C. Huang
Keyword(s):  
United Arab Emirates ◽  
Abu Dhabi
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