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Turning Weakness Into Strength: Hydraulic Pipe-Recovery System

Fig. 2—A HyPR 6⅝-in. connection after 700–800 gal/min at 1,500 psi with a 1% sand content for 150 minutes. At this flow rate, the diameter cut rate started at 0.6 in. for the first half hour, falling to 0.4 in. per half hour at the end. The outer diameter is 5.422 in., with approximately 0.4 in. of the pin remaining after the test.

Introduction

Stuck pipe has traditionally been a challenge for the oil and gas industry; in recent years, operators have become even more determined to reduce the effect of stuck-pipe issues. Even with the best planning and practice, there is a significant probability in certain wells that some of the string will not come back out of the hole. While losing a bottomhole assembly is never ideal, the time wasted in trying to free it and in redrilling afterwards can be far worse.

HyPR HoleSaver

The results of Churchill Drilling Tools’ collaboration with drilling crews in the North Sea and the Gulf of Mexico and extensive research and development resulted in the creation of the HyPR HoleSaver, the first hydraulic pipe-recovery system. In March 2015, the system had its first major deployment, optimizing stuck-pipe contingency in zones highly vulnerable to differential sticking. Although no stuck-pipe issues arose, the tool significantly reduced the cost-overrun risks. The tool is now being considered for imminent deployment by a number of other major operators and leading independents, to reduce costs and risks in a wide range of upcoming wells across the globe, particularly in the Gulf of Mexico.

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Turning Weakness Into Strength: Hydraulic Pipe-Recovery System

Mike Churchill, Churchill Drilling Tools

01 June 2015

Volume: 67 | Issue: 6

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