Well network deployment method of giant thick fractured and buried hill reservoir

Abstract

The invention relates to a well network deployment method of a giant thick fractured and buried hill reservoir. The method is characterized in that a set of large-fracture-injection small-fracture-production plane-staggering longitudinal-three-dimension bottom-injection and top-production horizontal well injection-production well network is deployed in the giant thick fractured and buried hill reservoir, wherein for the large-fracture injection, an injection well is deployed at a large fracture region of the giant thick fractured and buried hill reservoir; for the small-fracture production, a production well is deployed in a small fracture region of the giant thick fractured and buried hill reservoir; for the plane staggering, the projection of the injection well and the projection of the production well on the plane are mutually parallel but not rightly aligned; for the longitudinal three-dimension, the horizontal wells are in parallel arrangement at different depths in the giant thick fractured and buried hill reservoir, and a three-dimensional well network is formed in a direction parallel to the gravity and in a cross section perpendicular to a main shaft; and for the bottom injection and top production, a water injection well is arranged at the bottom of the giant thick fractured and buried hill reservoir, and a production well is arranged on the top of the giant thick fractured and buried hill reservoir. The well network deployment method can effectively solve the problem of well distribution difficulty of the giant thick buried hill reservoir, and belongs to an effective well distribution method of the giant thick fractured and buried hill reservoir.

Description

technical field [0001] The invention relates to a method for arranging wells, in particular to a method for arranging wells in extremely thick buried hill fractured oil reservoirs in the exploitation of oil and gas. Background technique [0002] At present, most of the existing well layout technologies at home and abroad are aimed at structural oil and gas reservoirs, and there is no mature well layout technology and well layout method for fractured reservoirs, which also leads to The treatment of the same phenomenon varies greatly from person to person. [0003] The well layout technology for structural oil and gas reservoirs is to deploy well positions on the established trap structures, and there are standard well patterns for reference. However, the distribution of fractured reservoirs is complex, the physical properties vary greatly, and are affected by faults, fractures and strong heterogeneity. For this kind of reservoirs, the key to well location deployment is not o...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the existing well layout technologies at home and abroad are aimed at structural oil and gas reservoirs, and there is no mature well layout technology and well layout method for fractured reservoirs. The treatment of the same phenomenon varies from person to person, with large differences

Images