FIELD: oil-and-gas industry.
SUBSTANCE: wellhead box comprises cases with through channel for lowering logging instruments on cable. Note here that the case is arranged under spider and consists of the parts (cases) making the through channel composed by communicated "top", "mid" and "bottom" cavities. Case cavities houses detachable automatic check valve, ball valve and starter valve. Wellhead box bearing device incorporates extra free-running hollow rod with adapter at bottom end and pressure transducer.
EFFECT: enhanced performances, safe operation, simplified remote control.
5 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
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|
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| ONCE-THROUGH FILL-FLOW FORMATION TESTER | 0 |
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SU1620621A1 |
| SAMPLER - FORMATION TESTER | 0 |
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| PUMPING PACKER AND CUTOFF SYSTEM FOR SIMULTANEOUS AND SEPARATE OPERATION OF WELL FORMATIONS (VERSIONS) | 2013 |
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RU2678249C1 |
