«Onshore and offshore oil and gas well construction»

Application of modern technologies in the field of drilling process fluids to improve the quality of productive reservoirs opening

UDC: 622.24.06
DOI: 10.33285/0130-3872-2023-3(363)-11-15

Authors:

¹ Tyumen Industrial University, Tyumen, Russia

Keywords: clay-free drilling fluid, clay drilling fluid, weight additives, primary opening, biopolymer solutions, requirements for drilling fluids, drilling analysis, abnormally high reservoir pressure, Achimovskaya formation, composition selection

Annotation:

The aim of the work is to determine the most appropriate composition of the drilling fluid for the safe opening of oil-saturated deposits on the example of the Achimovskaya formations of the Urengoyskoye field. The importance of the problem under consideration is associated with the need to preserve the characteristics of oil-saturated reservoirs using advanced well drilling methods. Reservoirs primary opening is considered to be a difficult problem, since the issue of preserving the reservoir properties and preventing gas, oil and water intrusions during drilling as well as analyzing the reservoir properties and determining the amount of potential residual fluid in the reservoir rock in prospecting and exploration wells, is acute. Wells drilling under conditions of abnormally high reservoir pressure (AHRP) at the Urengoyskoye field was analyzed, the reasons for the low technical-economic indicators of construction were identified and requirements for drilling fluids were drawn up. The results of analytical studies are given and the composition of the flushing liquid is presented.

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