非常规/复杂油藏

综合技术可有效诊断致密砂岩中的水

本研究描述了一种将井孔声学反射成像与高含水水平井生产测井相结合的技术,目的是制定缓解计划。

电子探头测量持水率。
图1——电子探针测量持水率。
来源:URTeC 3864145。

鄂尔多斯盆地西峰区块三叠系长8致密砂岩储层渗透率较低,开发过程中采用水力压裂、注水改造,产油时间短即见水。针对一口高含水水平井,提出采用井孔声波反射成像与生产测井相结合的解决方案,查明产水阶段,找出产水原因,制定堵水方案。

介绍

鄂尔多斯盆地位于华北地区,面积约2.5×105km2

图片尺寸 1280X1280
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原文链接/JPT
Unconventional/complex reservoirs

Integrated Technique Provides Effective Water Diagnostics in Tight Sand

This study describes a technique combining borehole acoustic reflection imaging with production logging in a horizontal well experiencing high water cut with the aim of enabling a mitigation plan.

The E-probe measures water holdup.
Fig. 1—The E-probe measures water holdup.
Source: URTeC 3864145.

The Triassic Chang 8 tight sand reservoir in the Xifeng block of the Ordos Basin features low permeability, which means that hydraulic fracturing and subsequent waterflooding were performed during its development phase. Water breakthrough was encountered after a short period of oil production. A solution of borehole acoustic reflection imaging combined with production logging was proposed in a horizontal well suffering from high water cut. The objective was to determine which stages contributed most to water production, understand the cause, and, ultimately, create a water shutoff plan.

Introduction

The Ordos Basin, with an area of approximately 2.5×105 km2, is in North China.

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