Double-throttle control slurry pump distributing manifold for applying wellhead back pressure and method
A mud pump and shunt pipe technology, which is applied in the field of double throttle control mud pump shunt manifold, can solve the problems of back pressure pump leakage pollution, non-production time increase, bottom hole pressure control inaccuracy, etc.
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[0081] Such as figure 1 As shown, the dual-throttle control mud pump branch manifold includes the main pipe 1, manifold cross 37, first manifold 2, second manifold 3, and third manifold 4; manifold cross 37 is connected to main pipe 1 respectively , The first branch pipeline 2, the second branch pipeline 3 and the third branch pipeline 4; a pressure gauge 5 is installed on the main pipe 1; a first stop valve 6 and a first throttle valve 9 are installed on the first branch pipeline 2 A stop valve 6 is located between the first throttle valve 9 and the manifold four-way 37; a second stop valve 7 and a second throttle valve 10 are installed on the second branch pipeline 3, and the second stop valve 7 is located in the second section. Between the flow valve 10 and the manifold four-way 37; a third shut-off valve 8 is installed on the third branch pipeline 4. Through the opening and closing of the first shut-off valve 6, the second shut-off valve 7, and the third shut-off valve 8, t...
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