SOUTHWEST PETROLEUM UNIVERSITY Patent applications |
Patent application number | Title | Published |
20160069153 | GEL, LEAKING STOPPAGE METHOD USING THE SAME AND WELL KILL LEAKING STOPPAGE METHOD USING THE SAME - The present invention relates to the field of well drilling, and particularly to a gel, a plugging method using the same, and a well killing and plugging method using the same. The gel is a water soluble hydrophobic associated polymer copolymerized by hydrophobic monomer and nonionic monomer, or a water soluble hydrophobic associated polymer copolymerized by hydrophobic monomer, nonionic monomer, and alkene salt monomer. The copolymerization method thereof may be a copolymerization post-hydrolysis method or a copolymerization co-hydrolysis method. The leaking stoppage method using the gel comprises: adding 8-18 | 03-10-2016 |
20160032704 | DEEPWATER DRILLING CONDITION BASED MARINE RISER MECHANICAL BEHAVIOR TEST SIMULATION SYSTEM AND TEST METHOD - The present invention discloses a deepwater drilling condition based marine riser mechanical behavior test simulation system. An upper three-component dynamometer, an tipper connecting structure, a marine riser, a lower connecting structure and a lower three-component dynamometer are connected between an upper trailer connecting plate and a lower trailer connecting plate in sequence. The invention further discloses a test method. The present invention has the advantages that the mechanical behavior of the marine riser under deepwater drilling condition and marine environment coupling effect can be simulated comprehensively and accurately, and the apparatus can simulate ocean current environment, apply top tension to the marine riser, simulate circulation of internal drilling fluids at different current rates, simulate rotation of the drill stem at different rotational speeds and apply different drill pressures. | 02-04-2016 |
20150300554 | ACTIVELY DRIVEN SPIRAL PIPELINE ROBOT - An actively driven spiral pipeline robot is disclosed, comprising: a body, a power device, a driving shaft, an axle, a driving wheel carrier mounted at one end of the body, and a variable diameter mechanism disposed on the driving wheel carrier. The axle is disposed on the variable diameter mechanism. A driving wheel is fixedly mounted on the axle. The driving shaft and the axle are connected via a connector. The driving shaft is further connected with an output shaft of the power device via a transmission device. The present invention has following beneficial effects: a scope of application of the robot is expanded, an operation is stable, and an axial force is large. In addition, an axial position of the robot is adjusted by controlling an operation of the driving wheel, and an adjustment precision is high. | 10-22-2015 |
20130153796 | Underground Annular Blowout Preventer and Assembly Process Thereof - An underground annular blowout preventer, which belongs to the technical field of underground blowout prevention, includes an upper joint and a lower joint are sleeved outside a central barrel. The lower end of the central barrel is fixedly connected with the lower joint. The lower end of the upper joint is sleeved on the inner side of the upper end of the lower joint. The upper joint is matched with the lower joint through a spline. The lower end of the upper joint can freely move relative to the lower joint along a spline pair. At least one rubber barrel is sleeved on the outer side of the upper joint. The rubber barrel can be extruded and expanded by the upper joint and the lower joint. The underground annular blowout preventer of the present invention can transmit large torque, has a simple structure, long service life, is convenient to use, and can be repeatedly used. The underground annular blowout preventer is used in coordination with a check valve of a near drill in the well drilling process, so that quick sealing of a well can be ensured, and well blowout accidents can be effectively prevented. A pipe column is lowered to seal the well and is lifted to open the well, and the inside of the drill rod is in communication with an annular space after the well is sealed, which facilitates replacement for heavy mud lubrication operations. | 06-20-2013 |