摘要:
Procedure for evaluating the parameter of actual K.sub.a total friction of a shouldered threaded connection which includes:a) making up the connection applying a general make-up torque and observing the corresponding torque/turn diagram;b) subsequently breaking out the connection observing the corresponding torque/turn diagram;c) calculating the actual K.sub.a of the connection with an appropriate equation.
摘要:
Equipment for intercepting and diverting liquid circulation flow includes three chambers and a series of valves. The chambers are equipped with a connection device with arrival or supply lines, communicating with each other, of which only a first chamber communicates with second and third chambers. Communication between the first and second chambers and between the first and third chambers each is obtained by at least two valves, one is a flow-rate valve and at least one is an equalizer valve. An upstream or downstream of each equalizer valve is coupled with a fixed or adjustable flow-blocking device. The second and third chambers do not communicate and include a three-way valve in common with each other, or include two one-way valves in counterposition. One one-way valve is open when the other is closed and vice versa, and the three-way valve or the two one-way valves are coupled with a discharge valve.
摘要:
Production tubing for oil wells comprising a plurality of cylindrical elements made of a composite material consisting of continuous carbon fibres impregnated with a thermosetting epoxy resin, joined adjacently to each other by means of a male/female connection system, wherein the male connection is present on one end of the cylindrical element and the female connection is present on the other end of the cylindrical element.
摘要:
Process for recovering at least 70% of hollow glass microspheres having an average diameter, according to the ASTM D1214-1989, ranging from 5 to 200 μm contained in a mixture of drilling mud and cuttings which comprises: a) screening, if necessary, the mixture through one or more 5 to 20 mesh sieves; b) feeding the screened mixture to one or more cyclones and/or hydrocyclones arranged in series, each of which is fed with a volume flow-rate from 1.5 to 10 times higher than the maximum nominal operating value.
摘要:
A method for the extinction or oil well-killing or killing of an underwater well for the extraction of hydrocarbons under uncontrolled fluid discharge conditions, also called blowout, by assembling, in correspondence with the lower end portion of a string of pipes for the extinction or killing string, a constraint group for rigid connection between a plurality of remote-operated underwater vehicles and the killing string; detecting the position of a flow of fluids and positioning the killing string substantially in correspondence with said flow; lowering a plurality of remote-operated vehicles close to the lower end portion of the killing string; connecting the remote-operated vehicles to the constraint group; detecting in real time the relative position of the flow of fluids with respect to the vehicles and calculating the position of the outlet hole of the flow; on the basis of the calculated position of the outlet hole, coordinately piloting the vehicles so as to bring the lower end of the string in correspondence with the position of the outlet hole of the flow.
摘要:
A method for the extinction or oil well-killing or killing of an underwater well for the extraction of hydrocarbons under uncontrolled fluid discharge conditions, also called blowout, by assembling, in correspondence with the lower end portion of a string of pipes for the extinction or killing string, a constraint group for rigid connection between a plurality of remote-operated underwater vehicles and the killing string; detecting the position of a flow of fluids and positioning the killing string substantially in correspondence with said flow; lowering a plurality of remote-operated vehicles close to the lower end portion of the killing string; connecting the remote-operated vehicles to the constraint group; detecting in real time the relative position of the flow of fluids with respect to the vehicles and calculating the position of the outlet hole of the flow; on the basis of the calculated position of the outlet hole, coordinately piloting the vehicles so as to bring the lower end of the string in correspondence with the position of the outlet hole of the flow.
摘要:
A device and the relative procedure are described, for the insertion of a new drilling string-element into a drilling-string essentially consisting of a short pipe-shaped body (C) having, at its ends, means suitable for screwing it onto drill pipes, in which two valves are housed, of which one (A) is radial to said short body, interceptable from the outside by means of an adaptor and equipped with a suitable safety plug, the other (B) axial to said body.
摘要:
A device and the relative are described, for the insertion of a new drilling string-element into a drilling-string essentially including a short pipe-shaped body (C) having, at opposite ends thereof, a device suitable for screwing the body onto drill pipes, in which two valves are housed, of which one valve (A) is radial to said short body, interceptable from the outside by means an adaptor and equipped with a suitable safety plug, the other valve (B) being axial with respect to the body.
摘要:
Method for the centralization of drill casings in a tight borehole, both vertical and deviated, comprising the following operations: Application on the casing section in question, of an adherence strip equipped with one or more housings and rapid adjustable lever closure; Insertion of suitable molds in the housings of which the strip is equipped; Injection into the molds of plastic material characterized by a high mechanical resistance, a high degree of surface adhesion and resistance to abrasion by friction, and also in-place elasticity, higher than the elasticity of the casings; Removal of the adherence strip once the hardening of the plastic material in the shape of the mold, has been completed.