Product Location: Panjin, Liaoning

Stock Cycle:10-14 days

Expandable Tubular Casing Patch Technology is a characteristic technology of the Drilling Institute of Great Wall Drilling Engineering Institute . This technology focuses on the operation of old wells, compensates for damaged sections, and reconstructs the integrity of wellbore pressure. It is beneficial for the operator to re perforation and fracturing the reservoir, thereby achieving the resumption of old well production or single well production increase. This technology has the advantages of high strength, reliable sealing, and large diameter after repair.

 This technology reconstructs the integrity of the wellbore, laying the foundation for subsequent operations under high-pressure conditions, achieving the effect of "cost reduction and efficiency increase", and is favored by major oil fields.

 This technology has reconstructed the integrity of the wellbore and laid the foundation for subsequent operations under high-pressure conditions, achieving the effect of "cost reduction and efficiency increase". It has been favored by major oil fields. Currently, this technology has completed more than 200 casing subsidies in oil and gas fields such as Liaohe Oilfield, Changqing Oilfield, Daqing Oilfield, Sichuan Oil and Gas Fields, and Coalbed Methane Company, with a total subsidy length of 2000m and 200 sets of expansion threads, and a construction success rate of 100%. In the construction well, the maximum length of the subsidy section is 68m, the maximum depth of the construction well section is 3841m, the maximum inclination is 90 °, and the maximum temperature is 350 ℃. The expansion pipe  Casing Patch completed in the shale gas block in March 2022 set a record of 90MPa sealing pressure in China.