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Fiber composite sand control process without sieve tube and treatment agent formula

A fiber composite and fiber technology, which is applied in the field of fiber composite screenless sand control technology and treatment agent formulation, can solve the problems of reducing sand control effect, short resin validity period, reservoir damage, etc., so as to facilitate well workover operations and save screen costs. Effect

Inactive Publication Date: 2006-12-27
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2. The traditional sand control technology has certain damage to the reservoir
[0005] 3. The resin-coated sand filling sand control technology developed in recent years, due to the short validity period of the resin; when filling, some blastholes are not filled or not completely filled, and the sand enters the oil well through the unfilled blastholes, thereby reducing Sand control effect

Method used

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  • Fiber composite sand control process without sieve tube and treatment agent formula
  • Fiber composite sand control process without sieve tube and treatment agent formula
  • Fiber composite sand control process without sieve tube and treatment agent formula

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Embodiment

[0048] Embodiment: The invention is implemented for sand control in the Se 3-18 well of the Sebei gas field. The buried depth of the reservoir in the Sebei gas field is between 540 and 1740 meters, and the closure pressure of the formation is about 14.0MPa. Under this closure pressure, the fragmentation rate of the quartz sand is low, which can meet the needs of the reservoir. In addition, considering the erosion resistance strength of the fiber composite, resin-coated quartz sand with a particle size of 0.3-0.6 mm is selected as the proppant in the fiber composite. The sand control section of Well Se 3-18 is 1241.0-1251.0 meters and 1254.4-1256.5 meters, with an effective thickness of 12.1 meters and a total thickness of 15.5 meters. The shale content of the reservoir in this section is 45%, the porosity is 31%, and the permeability is 51×10 -3 μm 2 , the gas saturation is 62%.

[0049] 1. Fiber sand stabilizer reservoir pretreatment process

[0050] Use thickened tubing ...

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PUM

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Abstract

The invention relates to a method for preventing sand in oil natural gas well, and the formula of relative processing agent, wherein the invention uses fiber to form three-dimension mesh structure, to control the process of discharging sand from storage layer and the formula of processing agent. The invention is characterized in that: first using crack machine and ground tube to extrude pretreatment liquid into storage layer; then using salt water clean liquid to crack; then using fiber composite to process main crack; extruding and completing sand prevention. The invention can eliminate the damage on former oil well storage layer, to improve the leakage condition; and the well eye is filled with fiber composite ring around; the invention can improve yield, realize non-screen sand prevention, and save cost.

Description

Technical field [0001] The invention relates to an oil well sand control process in the field of petroleum and natural gas exploitation technology and a treatment agent formula used in sand control construction, in particular to the use of fibers to interlock to form a three-dimensional network structure in the workover process of loosely cemented oil and gas reservoirs , technological measures to control sand production in reservoirs and formulations of treatment agents used. Background technique [0002] At present, oil well sand control technologies are mainly divided into three categories. 1. Adopt mechanical sand control, such as Chinese Patent Publication No. 2637724; 2. Use chemical resin for chemical sand control, such as Chinese Patent Publication No. 1168407; implement filling technology for sand control, such as Chinese Patent Publication No. 2530030. Sometimes a combination of various methods is used to achieve a certain sand control effect, but these sand contr...

Claims

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Application Information

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IPC IPC(8): E21B43/02C09K8/04
Inventor 袁士义刘玉章周福建杨贤友熊春明张守良宗贻平孙凌云汪君臣李江涛管志强杨生炳吴学安张洪良
Owner PETROCHINA CO LTD
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