新型可固化工作液的室内研究

Laboratory Study on a New Settable Working Fluid

摘要:

针对难以堵漏的恶性漏失地层和水泥封固效果不良的垮塌层，开发出新型可固化工作液。该工作液以常规钻井液为基础，具有优良的悬浮能力、流变性和抗盐能力，与钻井液相容性良好，在一定条件下能固化达到一定强度。可作为堵漏液使用，也可在井壁失稳地层作为封固液使用，能有效提高堵漏成功率和对失稳地层的封固效果。

Abstract:

According to the collapsing formation which is difficult to control the severe leakage and can not be effectively cemented, a new settable working fluid was developed. It is based on the conventional drilling fluid with good suspension capacity, rheological property, salt-resistant ability and good compatibility of drilling fluid, its suitable solidification intensity can be reached under certain conditions and can be used as sealing fluid or as cementing fluid in borehole instability formations to improve the sealing and cementing effect.