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首页> 外文期刊>Petroleum Science and Technology >Study and Application of Weakly Gelled Shear Strength-Improving Agent (GEL-30) for Solids-Free Drilling Fluid
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Study and Application of Weakly Gelled Shear Strength-Improving Agent (GEL-30) for Solids-Free Drilling Fluid

机译：无固体钻井液弱凝胶剪切强度改进剂（GEL-30）的研究与应用

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摘要

Conventional shear strength-improving agents (such as high viscosity carboxymethyl cellulose (HV-CMC), hydroxyethyl (HEC), etc.) cannot meet the low shear rates and high viscosity required for solids-free drilling fluids. In addition, most polymer shear strength-improving agents are not highly biodegradable and are more polluting to the environment after use. Focusing on these problems, in this article biopolymer was used after activating, compounding, and other technology in surfactants, we developed a novel weakly gelled shear strength-improving agent. Lab research and field application showed that this weakly gelled shear strength-improving agent (GEL-30) had excellent heat and salinity tolerances. The weakly gelled shear strength-improving agent has superior viscosity (at 160°C, after 16 hr aging, the viscosity of 10% NaCl solution was still higher than 80,000 mPa.s at 0.3 r/min). In addition, it has excellent cuttings carrying ability. It is biodegradable and innocuous, which meets the requirements for drilling engineering and environmental protection.
机译：常规的剪切强度改进剂（例如高粘度羧甲基纤维素（HV-CMC），羟乙基（HEC）等）不能满足无固体钻井液所要求的低剪切速率和高粘度。另外，大多数聚合物的剪切强度改进剂不是高度可生物降解的，并且在使用后对环境的污染更大。针对这些问题，在本文中，在活化，复合和其他技术中将生物聚合物用于表面活性剂后，我们开发了一种新型的弱胶化剪切强度改进剂。实验室研究和现场应用表明，这种弱胶化的剪切强度改进剂（GEL-30）具有出色的耐热性和耐盐性。弱凝胶化的剪切强度改进剂具有优异的粘度（在160°C下老化16小时后，在0.3 r / min下10％NaCl溶液的粘度仍高于80,000 mPa.s）。此外，它还具有出色的切屑承载能力。可生物降解，无毒无害，符合钻井工程和环境保护的要求。

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