增强恢复能力

水力压裂优化了最初被认为是次要的储层开采

本文介绍了一个水力压裂试点项目,该项目使用一种能够产生更高裂缝导流能力的技术,以减少生产过程中的压降并改善层压连接。

通道压裂技术。
图1——通道压裂技术。
资料来源:SPE 213110。

鉴于厄瓜多尔 Apaika-Nenke 油田的油藏条件,实施了水力压裂试点项目,以最大限度地提高产量。在对层状储层进行分析后,实施了一项技术,该技术可产生更高的裂缝导流能力,以减少生产过程中的压降并改善通过层状的连接。河道压裂的成功实施使该技术成为现场需要增产的油井的首选完井方法。

介绍

Apaika-Nenke 构造位于亚马逊地区奥雷利亚纳省,位于 31 区块内。Apaika-1X 井的初步生产测试显示,M1 油藏的产油量为 1,201 BOPD,M2 油藏的产油量为 653 BOPD。 Nenke 1X 井 M1 产油量为 1,600 BOPD,M2 产油量为 328 BOPD。由于M1油藏的产油率较高,因此2013年开始的开发阶段将M1油藏作为首要目标。

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Enhanced recovery

Hydraulic Fracturing Optimizes Extraction of Reservoir Initially Considered Secondary

This paper describes a hydraulic fracturing pilot project using a technique that generates higher fracture conductivity to reduce the drawdown during production and improve connection through laminations.

Channel-fracturing technique.
Fig. 1—Channel-fracturing technique.
Source: SPE 213110.

As a result of reservoir conditions in Ecuador’s Apaika-Nenke field, a hydraulic fracturing pilot project was executed with the aim of maximizing production. After an analysis of the laminated reservoirs, a technique was implemented that generates higher fracture conductivity to reduce the drawdown during production and improve the connection through the laminations. The successful implementation of channel fracturing led to this technique becoming the preferred completion method in the field for wells requiring stimulation.

Introduction

The Apaika-Nenke structure is in Orellana Province of the Amazonian region inside of Block 31. Initial production tests in Well Apaika-1X showed an oil rate of 1,201 BOPD from the M1 reservoir and 653 BOPD from the M2 reservoir. In the Nenke‑1X well, the oil rate was 1,600 BOPD from M1 and 328 BOPD from M2. Because higher oil rates were obtained from M1, the development phase that began in 2013 targeted the M1 reservoir as its primary objective.

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