沙子管理/控制

高角度多裂缝完井系统开发深水海底油井

本文介绍了一种用于开发 Lower Wilcox 油藏的替代性低完井概念，称为高角度多裂缝井设计。

简化的示意图显示了常见的深水垂直压裂和填充开发策略在 a) 较厚的连续砂层（左）或 b) 堆叠砂层（右）中的样子。
简化的示意图显示了常见的深水垂直压裂和填充开发策略在 a) 较厚的连续砂层（左）或 b) 堆叠砂层（右）中的样子。
来源：SPE 220794。

墨西哥湾 (GOM) 的上威尔科克斯和下威尔科克斯油藏中已发现大量碳氢化合物，这些油藏通常由多层低渗透性砂岩叠置而成。其中一些发现已通过套管井垂直井和单趟多层压裂充填完井系统成功开发。本文介绍了一种用于开发此类油藏的替代性下部完井概念，称为高角度多裂缝 (HAMF) 井设计。本文通过油藏建模评估了 HAMF 概念的价值，以了解其对低流度油藏的价值。

介绍

这些低流动性 Wilcox 储层的一个关键特征是，它们通常由多组堆叠的单个砂体组成，而不仅仅是单个砂体、高流动性储层。

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Sand management/control

High-Angle Multifractured Completion System Develops Deepwater Subsea Wells

This paper describes an alternative lower-completion concept for developing Lower Wilcox reservoirs referred to as high-angle multifractured well design.

A simplified schematic showing what the common deepwater vertical frac and packdevelopment strategy would look like in both a) a thicker, continuous sand (left) or b) stacked sands (right).
A simplified schematic showing what the common deepwater vertical frac and packdevelopment strategy would look like in both a) a thicker, continuous sand (left) or b) stacked sands (right).
Source: SPE 220794.

Significant volumes of hydrocarbons have been discovered in Upper and Lower Wilcox reservoirs in the Gulf of Mexico (GOM), typically consisting of stacked sets of lower-permeability sandstones. Several of these discoveries have been developed successfully using cased-hole vertical wells and single-trip multizone frac-pack completion systems. The complete paper describes an alternative lower‑completion concept for developing these reservoirs referred to as high-angle multifractured (HAMF) well design. The value of the HAMF concept was assessed with reservoir modeling to understand its value for low-mobility reservoirs.

Introduction

A key feature of these low-mobility Wilcox reservoirs is that they often consist of multiple stacked sets of individual sand bodies rather than only a single-sand, high-mobility reservoir.

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