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Horizontal well segmented sand prevention and water control pipe string and design method thereof

A design method and technology for horizontal wells, applied to drilling equipment, drill pipes, casings, etc., to achieve the effects of improving water control effects, reasonable sand control, and reducing production costs

Active Publication Date: 2021-01-26
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a horizontal well segmented sand control water control pipe string and its design method to solve the problem that the existing pipe string design cannot comprehensively realize segmental sand control and water control.

Method used

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  • Horizontal well segmented sand prevention and water control pipe string and design method thereof
  • Horizontal well segmented sand prevention and water control pipe string and design method thereof
  • Horizontal well segmented sand prevention and water control pipe string and design method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1 provides a segmented sand control and water control pipe string for a horizontal well, and its structure will be described in detail below.

[0036] refer to figure 1 , the segmented sand control and water control pipe string for the horizontal well includes a reservoir 100 , a horizontal well, a sand control pipe assembly 2 , and several packers 3 .

[0037] Oil and gas are stored in the reservoir 100 . The horizontal well includes a horizontal part and a wellhead part. The wellhead part and the horizontal part are connected together from outside to inside and extend to the horizontal part of the horizontal well to penetrate into the reservoir 100 .

[0038] A water control experiment section 1 is selected in the horizontal part of the horizontal well and the surrounding reservoir 100 .

[0039] The wellhead of the horizontal well is provided with an oil pipeline 10 , and the inlet end of the oil pipeline 10 is docked with the oil outlet end of the inner ...

Embodiment 2

[0060] Embodiment 2 provides a design method for segmented sand control and water control pipe strings for horizontal wells, which is used to design the segmented sand control and water control pipe strings for horizontal wells in Embodiment 1. The design method includes the following steps:

[0061] Step S1: Determine the water control experiment section 1;

[0062] First, analyze reservoir parameters and production parameters of adjacent wells. Reservoir parameters include reservoir physical parameters, formation sand particle size distribution characteristics, shale content, clay minerals, water content, etc., and obtain formation fluid viscosity, fluid density, and horizontal section length , daily production, formation sand particle size distribution, and oil recovery index per meter, etc., analyze the requirements of reservoir parameters on sand control technology, the impact of different sand control methods on production effects and the production data of adjacent wells...

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Abstract

The invention discloses a horizontal well segmented sand prevention and water control pipe string and a design method thereof, and belongs to the technical field of large oil and gas processing treatment systems. The horizontal well segmented sand prevention and water control pipe string aims to judge a water production well section by determining a slow-release quantum tracer by considering waterproduction monitoring and water control design, and data is provided for later water plugging operation while self water control is achieved. According to the design method, a conventional method ofone well with one set of design is changed, so that the sand prevention and water control pipe string reasonably prevents sand, balances liquid production and controls local propulsion of a water body. According to the horizontal well segmented sand prevention and water control pipe string and the design method thereof, the contradiction between sand prevention and blockage prevention of a sand prevention screen pipe is solved, sand prevention and water control operation is integrally designed, the cost is low, the method is simple and effective, the defect that existing sand prevention and water control cannot be conducted at the same time is overcome, the water control effect is improved, the production cost is reduced, and obvious economic benefits and social benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of large-scale oil and gas processing systems, in particular to a segmented sand control and water control pipe string for a horizontal well and a design method thereof. Background technique [0002] In the process of oilfield development, the reservoirs in the horizontal well intervals have large differences, the fluid production intensity is uneven, and the sand wells produce water quickly, which easily leads to early coning of the water body. With the lengthening of the horizontal section of the horizontal well, the problem of water coning in the edge water and the bottom becomes more prominent, and some sand producing wells have high water cut at the beginning of production, resulting in uneven production of the target reservoir, rapid water cut rise, and short stable production period. In order to prevent water production and stabilize oil production, it is necessary to install special mechanical device...

Claims

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Application Information

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IPC IPC(8): E21B49/00E21B17/00E21B47/11E21B33/122
CPCE21B49/00E21B17/00E21B33/122
Inventor 邓金根马成云冯哲林海闫新江
Owner CHINA UNIV OF PETROLEUM (BEIJING)