Technology of Preventing Borehole Deviation and Driving V erticalW ell of Well Puguang 3
单位
(中原石油勘探局钻井四公司)
Organization
No. 4 D rilling Company, ZPEB, SINOPEC, Q ingfeng 457321, China
摘要
普光3井上部地层属于高陡构造, 地层倾角大, 极易发生井斜, 地层可钻性差, 憋
跳钻严重, 防斜打直是上部地层施工的难点。该井在施工过程中应用了钟摆钻具组合、大尺寸
钻铤组成的塔式钻具组合和螺杆钻具组合。应用效果表明, 钟摆钻具组合在表层钻进时, 防斜
打直要求钻压很小, 因此制约了钻井速度; 大尺寸钻铤塔式钻具组合防斜效果较好, 匹配合适
的钻井参数并优选钻头, 则能有效提高钻井速度; 螺杆扭方位钻具组合是一种较积极的防斜打
直措施, 有必要进一步探索。
Abstract
The upside stratum ofW e ll Puguang 3 be long s to high ly steep struc ture, and its ob liquity is b ig, wh ich tends to boreho le dev iation. The dr illability o f the stratum is poor, and the b it jump ing is severe. Preventing boreho le dev ia tion and driv ing vertical we ll of the upside stratum are the d ifficult po ints o f the constructions. During the construction, the pendu lum assemb ly, the tower type m akeup o f str ing composed o f heavy gauge dr ill co llars and the assemb ly o f he lico id hydraulic mo tor we re app lied in the w e l.l The application e ffects show ed that the sm a ll bit pressure w as requ ired to prevent boreho le dev iation and dr ive the vertica l w e ll w hen pendu lum m akeup o f str ing w as drilled in the surface laye r, wh ich restricted drilling speed; towe r type m akeup o f string com po sed of heavy gauge drill co llars had a better effect on preven ting boreho le dev iation, and it could effectively im prove the dr illing speed when m atch ing w ith the suitable drilling pa ram e ters and selecting the drilling b its; upper screw to rque m akeup o f str ing was a m ore activ e m easurem ent o f preventing bo reho le dev iation and driv ing ve rtica lw ellw hich is necessary to be furthe r explored.
关键词：
普光3井;防斜打直;井身质量;机械钻速;钻具组合;钻井参数;
Keywords:
W ell Puguang 3, Preventing boreho le dev iation and driv ing vertical we l,l W e llbo re qua lity, Penetration speed, M akeup of str ing, Dr illing parameter;
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