A New Method of Logging Cement Quality in High Inclination Well Section in the East China Sea

In order to improve the utilization degree of reservoir reserves,besides the horizontal section,the upper part of the reservoir with a high inclination must to be exploited in most horizontal wells in the East China Sea.The method of exploitation is to have a 9-5/8"casing perforation operation.In order to make the perforation layer precise and improve the perforation quality,logging the cement quality of the perforation section is needed.The logging section is located in the high angle section of the well,so the cable logging tool is difficult to be put in place.Through analyzing the forces on the equipment,washing well before logging and installing the roller stabilizer on the equipment string make two well’s logging operation successful.The putting depth of equipment and inclinationin two wells are 77° at 3 800 m and 76° at 3 900 m respectively.