MONOBORE COMPLETIONS AND NOVEL WIRELINE PERFORATING OF HIGH-ANGLE WELLS IN THE NELSON FIELD

The Nelson field gas-lift completions were designed to optimize produc tion, enhance safety and reliability, and minimize well-maintenance co sts. The completions are of a near-monobore design and include an annu lar safety system, which is regarded as a major safety benefit during gas lift. The single-trip completions were batch installed in eight hi gh-angle (up to 70 degrees) predrilled wells. This paper presents deta ils of the completion design and the approach taken to planning and in stalling the completions. The paper also describes the use of a novel technique for perforating the platform wells with wireline guns.