钻井自动化

自动钻机、钻机控制系统、钻机程序可减少 BHA 故障

本文描述了运营商、钻机承包商和井底组件 (BHA) 服务提供商之间为期 18 个月的强化持续改进流程，旨在减少俄克拉荷马州两台钻机每口井的 BHA。

俄克拉荷马州运行后暗淡状况，显示磨损、热损伤、碎裂和切向断裂。
图 1——克拉荷马运行后暗淡状态，显示磨损、热损伤、碎裂和切向断裂。
资料来源：SPE 214997

减少井底组件 (BHA) 故障一直是该运营商在美国陆地中间和横向部分的重点，以降低每英尺成本。通过更好的自动钻机工艺、改进的钻机控制系统技术和基于钻井机械的程序可以减轻 BHA 故障。运营商、钻机承包商和 BHA 服务提供商进行了为期 18 个月的密集持续改进流程，帮助俄克拉荷马州的两个钻机减少每口井使用的 BHA 数量。目标是确定如何最好地调整自动钻机并标准化设定点实践。

介绍

操作员发现钻机控制系统，特别是自动钻机，在许多钻井情况下可能不稳定。

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原文链接/jpt
Drilling automation

Autodrillers, Rig-Control Systems, Driller Procedures Reduce BHA Failures

This paper describes an 18-month intensive continuous improvement process between an operator, a rig contractor, and bottomhole-assembly (BHA) service providers aimed at reducing BHAs per well in two Oklahoma rigs.

Oklahoma post-run dull condition, showing wear, thermal damage, chipping, and tangential fracturing.
Fig. 1—Oklahoma post-run dull condition, showing wear, thermal damage, chipping, and tangential fracturing.
Source: SPE 214997

Reducing bottomhole-assembly (BHA) failures has been this operator’s focus in US land intermediate and lateral sections to reduce cost per foot. BHA failures can be mitigated with better autodriller processes, improved rig-control-system technology, and drilling-mechanics-based procedures. The operator, rig contractor, and BHA service providers engaged in an intensive continuous improvement process for 18 months to help two rigs in Oklahoma reduce the number of BHAs used per well. The goal was to determine how to best tune the autodriller and standardize set-point practices.

Introduction

The operator has found that rig-control systems, particularly the autodriller, can be unstable in many drilling situations.

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