Long Horizontal Section Well Application in Developing Ultra-Low Permeability Layer

Abstract

The F oil layer is a typical low permeability reservoir. Conventional development cannot develop the low permeability reservoir effectively, so the long horizontal wells cooperate with volume fracturing in the way to transform the ultra-low permeability reservoirs. Well P1 is the first long horizontal section well drilled by our company. Based on its condition and formation characteristics, it conducts a large-scale multi-segment multi-cluster volumetric fracturing field test of horizontal wells to realize the volume utilization of the layers. The test verifies the feasibility of volume fracturing in the reconstruction of horizontal wells and the applicability of the supporting process in the application of ultra-low permeability reservoirs. At the same time, the fiber sand-adding process test for tight oil type II reservoirs was conducted. After the fracturing, tracer monitoring was performed on the flowback liquid to ascertain the produced fluid of each layer, and it was determined that the crack cutting technology had a good transformation effect. The design and development of well P1 is of guiding significance for the development of horizontal wells in low permeability reservoirs in the future.

Copyright 2018, Shaanxi Petroleum Society.

This paper was prepared for presentation at the 2018 International Field Exploration and Development Conference in Xi’an, China, September 18–20, 2018.

This paper was selected for presentation by the IFEDC Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper, as presented, have not been reviewed by the IFEDC Committee and are subject to correction by the author(s). The material does not necessarily reflect any position of the IFEDC Committee, its members. Papers presented at the Conference are subject to publication review by Professional Committee of Petroleum Engineering of Shaanxi Petroleum Society. Electronic reproduction, distribution, or storage of any part of this paper for commercial purposes without the written consent of Shaanxi Petroleum Society are prohibited. Permission to reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied. The abstract must contain conspicuous acknowledgment of IFEDC. Contact email: paper@ifedc.org.