Cementing Of Well KS902 (The Deepest Onshore Well In China) 139.7mm Tail Pipe Co
Well KS902 Is A Appraisal Well In The Kelasu Tectonic Zone Of Tarim Oilfield, With Well Completion Depth 8,038m, Breaking The Ultra-Deep Well Cementing Records (8,023m) Of Well KS7 In The Same Tectonic Zone Created By OMAX, Equivalent To “Underground Mount Everest”, And Called As Onshore “The Deepest Well”. The Cementing For 139.7mm Tail Gas Of This Well Was Also Jointly Completed By OMAX Northwest Project Management Department And Chuanshi Cementing Company, And The Cementing Was Successfully Completed On February 12, 2015. The Conventional Density Resistance To High-Temperature Anti-Channeling Elastoplastic Cement Slurry System Is Adopted For This Well. The Quality Of Cement Bond Logging (CBL) After Cementing Is Good, And The Pressure Test For Casing Meets The Standards. The Cementing Is Fully Affirmed By Kuqa Project Management Department Of Tarim Oilfield.
The Well Completion Depth Of This Well Is 8,038m; Electrical Logging Well Bottom Temperature Is 177.8ºC; Circulating Temperature Is 160ºC. There Are High Requirements On The Performance Of The Cement Slurry; And Leakage And Cement Gas Cut Occurred Repeatedly Before Cementing. Moreover, There Are Many Technical Problems Such As Deep Well, Small Annular Clearance, High Pressure Of Construction Pump, Narrow Formation Pressure Window, Easy To Leak During Lowering Casing And Cementing.
Leaders Of The Company And The Project Management Department Pay High Attention To This Superior Difficult Cementing, Carefully Develop Proposals, And Communicate With Party A On Cementing Process And Cement Slurry System In Advance. The Anti-Channeling Elastoplastic Cement Slurry System With Good Anti-Channeling Performance, Good Fluidity, Good Toughness, Good Stability Under High Temperature Will Be Used. The OMAX’s New Patented Product - High Temperature Elastoplastic Adhesive, Is Selected, To Make The Cement Sheath Have Good Plasticity, And To Protect The Integrity Of The Well Shaft At Later Stage.
The Well Was Tested For Production On The Target Stratum With Blow-Off Using 5mm Nozzle To Get High Production Oil And Gas Flow. The Daily Natural Gas Production Is 300,000 Cubic Meters. It Is The Deepest Well With Industrial Oil And Gas Flow Discovered Onshore In China So Far.
The Cementing Reflects The Unique Technical Advantages Of OMAX In Solving Ultra-Deep Well Cementing Slurry. The Cementing Creates A New Record In Cementing Of Ultra-Deep Well Of OMAX. OMAX Takes A New Step In Cementing Slurry Technology.