高温深层裂缝性地层钻井用复合堵漏材料

A Composite Plugging Materials for Drilling in High-temperature Deep Fractured Formations

杨岳鹏 张佳楠 张丽辉 尚有志 王 磊 张洪涛

YANG Yuepeng ZHANG Jianan ZHANG Lihui SHANG Youzhi WANG Lei ZHANG Hongtao

为了有效解决高温深层裂缝性地层钻井过程中出现的井漏现象，研制了一种抗高温刚性封堵剂HTD-2，并将其与改性无机矿物纤维GXW-1和弹性堵漏材料 TDS-2复配形成复合堵漏材料。通过耐温性能实验、裂缝封堵实验、高温高压砂床封堵实验以及与钻井液的配伍性实验等对堵漏材料的性能进行了评价。研究结果表明， HTD-2、GXW-1和TDS-2的耐温性能明显优于核桃壳；在高温高压条件下，单一堵漏材料无法对不同尺寸的裂缝均产生良好的封堵效果，而复合堵漏材料的封堵效果较好，配方为8% HTD-2+1.5% GXW-1+6% TDS-2的复合堵漏材料可使0.5～2 mm裂缝的 30 min 滤失量均降低至 100 mL以下，封堵层的承压能力均大于 10 MPa。复合堵漏材料的加入可使钻井液在不同粒径的岩屑砂床中均具有良好的封堵效果，0.85～2 mm砂床60 min侵入深度仅为9.3 cm。另外，复合堵漏材料与钻井液还具有较好的配伍性。现场应用结果表明，采用加入复合堵漏材料的钻井液进行现场施工时，GX-1 井钻井过程中未出现明显滤失现象，钻井过程顺利，有效提升了钻井效率和质量。该复合堵漏材料适合在高温深层裂缝性地层堵漏施工作业中进行推广应用。

In order to solve effectively the leakage phenomenon during drilling in high-temperature deep fractured formations，a new type of high-temperature resistant rigid sealing agent HTD-2 was developed，and it was compounded with modified inorganic mineral fiber GXW-1 and elastic sealing material TDS-2 to form a composite sealing material. The performance of the plugging material was evaluated through temperature resistance performance experiments，crack sealing experiments，high-temperature and high-pressure sand bed sealing experiments and compatibility experiments with drilling fluid. The results showed that the temperature resistance performance of HTD-2，GXW-1，and TDS-2 was significantly better than that of walnut shell. Under high temperature and pressure conditions，a single sealing material could not achieve good sealing effects on cracks with different size， while composite sealing materials had better sealing effects. The composite sealing materials，composes of 8% HTD-2 + 1.5%GXW-1+6% TDS-2，could make the 30 min leakage of 0.5—2 mm cracks be reduced to below 100 mL，and the pressure bearing capacity of the sealing layer was greater than 10 MPa. The addition of composite plugging materials could make the drilling fluid have good sealing effect in different sizes of rock debris sand beds，with a 60 min invasion depth of only 9.3 cm for 0.85—2 mm sand beds. In addition，the composite sealing materials had good compatibility with drilling fluids. The in-site application results showed that when using drilling fluid with composite plugging materials for in-site construction，there was no significant leakage phenomenon during the drilling process of GX-1 well，and the drilling process was smooth，effectively improving drilling efficiency and quality. This composite sealing material is suitable for promotion and application in sealing construction operations in high-temperature and deep fractured formations.

10.19346/j.cnki.1000-4092.2025.01.003