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An optimization method for hydraulic fracturing and fracture layout of newly drilled horizontal wells in water injection development well pattern

A technology of hydraulic fracturing and optimization method, which is applied in the direction of wellbore/well components, design optimization/simulation, production fluid, etc. It can solve the problems of incommunication, etc., and achieve the reduction of investment cost, gradual reduction, and increase of single well production Effect

Active Publication Date: 2022-06-03
PETROCHINA CO LTD
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  • Summary
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AI Technical Summary

Problems solved by technology

When designing hydraulic fractures for such wells, it is necessary to maximize the production of remaining oil and not communicate with the formed waterline and surrounding old wells. However, there is no effective method and production practice at present. Therefore, it is urgent to focus on this type of infill Horizontal Wells Form a Reasonable Hydraulic Fracturing Fracture Design Method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] S5, according to the waterline feature in the well pattern and the well spacing in the well pattern, optimize the optimum value of the hydraulic fracturing artificial fracture zone length.

Embodiment 2

Embodiment 3

[0063] S201. The length of the horizontal section of the dry interval can be directly read by the comprehensive logging diagram;

[0069] S301: Determine the waterline position, the waterline position refers to the ultra-low permeability (1mD

[0077] S3044, comprehensive steps S3041-S3043 determine a reasonable artificial crack placement seam position.

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Abstract

The invention relates to a hydraulic fracturing fracture optimization method for newly drilled horizontal wells in the water injection development well network. The method of the present invention is based on making full use of the remaining oil in old oilfields while avoiding communication with waterlines and old wells. It can not only effectively and to a greater extent produce remaining oil and obtain more industrial crude oil; At the same time, the energy supplement of the injected water is used to maximize the single well production and reduce the decline rate; it can also avoid communication with the old wells under the original well pattern conditions, which interferes with the old wells’ influence on crude oil production. Contribute to improve the effect of the overall adjustment and development of the oilfield.

Description

An optimization method for hydraulic fracturing and fracture layout of newly drilled horizontal wells in water injection development well pattern technical field The present invention relates to the field of oil production engineering, in particular to the hydraulic fracturing of a newly drilled horizontal well in a water injection development well pattern Fabric seam optimization method. Background technique Low pressure (pressure coefficient is about 0.7) represented by Changqing Oilfield, low permeability (permeability <10×10 ‑3 um 2 )Oil It is very difficult to produce crude oil, and the well pattern in the water injection development area with water wells as the center and oil production distributed in the periphery is mainly formed. right The fracturing of the oil production well forms the oil flow channel with high conductivity, and the water well is flooded by water injection, so as to obtain the maximum connection between the oil well and the water...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/26E21B49/00E21B47/00E21B43/30G06F30/20
CPCE21B43/26E21B49/00E21B47/00E21B43/305G06F30/20Y02A10/40
Inventor 李志文张矿生唐梅荣张彦军王文雄吴顺林徐创朝刘顺曹宗熊山树民
Owner PETROCHINA CO LTD
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