Fluid influx to a battery ofincomplete horizontally branched wells in deformed formation
Dzhalalov G.I. Kunayeva G.E. Moldabayeva G.Zh.
2021National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2021#3Issue 44729 - 33 pp.
Using numerousexperimentalandfield researches, it was established that there are rock deformations duringoil and gas fields development, occurred due to thereservoir response. It has been established that formationvolume of pore space is decreased due to elastic expansion of rock grains and increase of compression strength transferred to matrix from mass of overlying rocks due to formation pressure depletion. As the result, there are deformation processes in porous medium accompanied by degradation of its porosity and permeability, and suffered greater change compared to the formation porosity, sufferedpermeability at the samepressure variation. Demonstration of mentioned anomalies under formation conditions leading to non-linear effect can strongly influence the whole process of the reservoir development and lead to various qualitative and quantitative differences between the observed facts and the indicators which were calculated using standard methods. Formulas for determination of debits of incomplete horizontally branched wells (HBW) in deformed formation for various number of horizontal shafts in a battery were obtained in this work using image method of drains (sources) and superposition. Obtainedestimate indicatorscan be used inengineering works during development of the deposits indeformed environment.
Bore length , External boundary , Permeability , Pressure , Rock deformation , Steady state , Yield
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National Academy of Sciencesof Azerbaijan, Aktau, Kazakhstan
Caspian State University of Technologies and Engineering named after Sh. Yessenov, Aktau, Kazakhstan
Department of Petroleum Engineering, Satbayev University, Satpayev 22 a, Almaty, 050013, Kazakhstan
National Academy of Sciencesof Azerbaijan
Caspian State University of Technologies and Engineering named after Sh. Yessenov
Department of Petroleum Engineering
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