Saturation Evaluation of Low Permeability Condensate Reservoirs in the Presence of an Oil-Rim with Wireline Formation Testers (Russian)

Novikov, S.; Weinheber, P.; Charupa, M.; Rudenko, D.; Filimonov, A.; Blinov, V.; Yazkov, A.; Shadchnev, N.; Milushkin, A.; Piana, M.

doi:10.2118/171162-ru

Cited by 3 publications

(1 citation statement)

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“…Неполное совпадение давления откачки при моделировании и фактического давления при опробовании ИПК можно объяснить неоднозначной динамикой очиски прискважинной зоны пласта от фильтрата бурового раствора, а также компрессионными эффектами в межпакерном пространстве (Novikov, 2014). 13).…”

Section: а) б)unclassified

Tight Gas Achimov Formation Evaluation and Sampling with Wireline Logging Tools: Advanced Approaches and Technologies (Russian)

Novikov¹,

Weinheber²,

Charupa³

et al. 2015

SPE Russian Petroleum Technology Conference

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Section: а) б)unclassified

Tight Gas Achimov Formation Evaluation and Sampling with Wireline Logging Tools: Advanced Approaches and Technologies (Russian)

Novikov¹,

Weinheber²,

Charupa³

et al. 2015

SPE Russian Petroleum Technology Conference

Self Cite

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Contact Determination, Fluid Typing and Deliverability Estimation in North Caspian Appraisal Wells

et al. 2015

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This paper presents a comprehensive example of wireline formation tester and drillstem tester data that offers insight to compare and contrast the information that can be delivered by these two similar but different technologies. The dataset presented here consists of logs, WFT and DST data from two North Caspian wells penetrating Cretaceous and Jurassic layers. The log data is used to initially predict fluid types and contacts. This is later verified with WFT data. This combined answer is then used to design a well test program to extract maximum data for development planning. Data is also used to defend the booking of reserves before state committees. Difficult reservoir conditions including complex mineralogy and varying and unknown water salinity can make fluid typing and contact determination from wireline logs alone to be problematic. By incorporating WFT downhole fluid analysis data ambiguities in the petrophysical interpretation can be resolved and the results from the continuous log measurements can be calibrated by the sparser WFT dataset. Mobility information from WFT data is also used to calibrate log-derived permeabilities and this is used appropriately plan the DST program. Finally data from the DST program, including rates, fluid types and fluid properties are reconciled with the corresponding WFT data.

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Integrating Experience and Developing Recommendations to Aid in Formation Testing Jobs Planning in Various Geological Conditions

Chashkov¹,

Shalamov²,

Shkunov³

et al. 2020

Day 3 Wed, October 28, 2020

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The objective of this work is to summarize obtained information during the well formation testing (WFT) jobs completed in open hole at the fields of PJSC NOVATEK. We also conducted analysis of formation pressure measurements, assessment of the saturating fluid type and the quality of downhole fluid samples collected at various geological and well conditions. Now PJSC NOVATEK and its subsidiaries have been actively using various types of WFT to solve a complex geological objective on the fields at exploration and development steps. Thus, an impressive array of data was formed, and detailed analysis made it possible to develop optimal success criteria and recommendations for carrying out such jobs in the wells. We used data obtained with WFT jobs in the main productive reservoirs of the Cenomanian, Marseilian, Tanopchin and Achimov strata in the northern region of Western Siberia. We have considered influence of various geological and technological factors on the reliability on formation pressures (FP) measurements with WFT. To assess the quality of downhole fluid analysis (DFA) we tried to compare time to reservoir fluid appearance, reservoir properties, drilling fluid type etc., in dependence of sampling tool type utilized. Within performed interval pressure transient tests (IPTT) an analysis of the quality of the hydrodynamic parameters of the reservoirs was conducted aiding to plan cased hole well-tests. We also considered of WFT application for representative downhole sampling to obtain information of the main PVT properties of reservoir fluids.

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Saturation Evaluation of Low Permeability Condensate Reservoirs in the Presence of an Oil-Rim with Wireline Formation Testers (Russian)

Cited by 3 publications

References 0 publications

Tight Gas Achimov Formation Evaluation and Sampling with Wireline Logging Tools: Advanced Approaches and Technologies (Russian)

Tight Gas Achimov Formation Evaluation and Sampling with Wireline Logging Tools: Advanced Approaches and Technologies (Russian)

Contact Determination, Fluid Typing and Deliverability Estimation in North Caspian Appraisal Wells

Integrating Experience and Developing Recommendations to Aid in Formation Testing Jobs Planning in Various Geological Conditions

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