高承压酸溶性堵漏剂ZC6-6的研制与应用

Study and application of high pressure bearable acid soluble plugging agent ZC6 - 6

针对钻井工程中同一裸眼井段地层压力系数相差悬殊、高低压层交替出现引起的高压差性井漏和“漏储同层”型井漏的油气层保护问题，研制成功了能大幅度提高漏层承压能力并能酸化解堵的高承压酸溶性固化堵漏剂 ＺＣ６－６。该堵剂养护２４ｈ的抗压强度≥１２ＭＰａ，凝固体的常温酸溶率≥９０％。现场易配制，施工方便，使用证明，可提高漏层承压能力 ０．４ｇ／ｃｍ３以上当量钻井液密度。该堵剂对产层和非产层井漏均可适用，也可用于修井作业中的井漏。

For formation pressure coefficient has considerable difference in the same bore hole, lost circulation is ofter happened. The high - pressure - bearable acid - soluble plugging agent ZC6 - 6 is developed to meet plugging and reservoir protection demands. ZC6 - 6 has the features: over 12 MPa compressive strength, 90% or more acid solubility and easy operation in the field. By application in field, the result shows that ZC6 - 6 can enhance resistance to pressure of thief zone. The plugging agent not noly is suitable for lost circulation of producing pay and nonproducing pay, but also is used in lost circulation of workover job