Method for bottomhole apparatus installation in lubricator

FIELD: oil and gas industry, particularly devices for well survey and oil or gas sample taking.

SUBSTANCE: method involves lifting lubricator; inclining lubricator through 40-45° to vertical line and retaining thereof in inclined position during bottomhole apparatus insertion; lowering lubricator in well and vertically installing thereof on connection unit of well production tree. The simultaneous lifting, inclination, retaining, as well as simultaneous lowering and installation operations are carried out with the use of mechanism. The mechanism comprises two cantilever arms connected one to another by worm gear type screw adapted to bring together and pull apart above arms under handle rotation.

EFFECT: extended possibilities of well survey in difficult-to-access areas characterized by severe climate and geographical environment without the use of hoisting equipment, increased efficiency or work performance due to reduced costs and decreased time of technological operation performing.

2 dwg

 

The invention relates to the field of oil and gas industry and can be used when conducting in-depth research as well as in the selection of the deep samples of oil and gas.

The known method of the premises underlying instruments in the lubricator using lifting equipment and/or manually depending on the design of the lubricator. As lifting equipment, depending on the design of the lubricator is applied drilling and service rigs, equipped with a traveling block and crown block, traveling installation type a-50, "the Baku-3M, FAC-32, and the cranes on the basis of different cars. First raise the lubricator few inches above the connection node of surface valves wells, tips and support at an angle of 10÷15° from the vertical by means of the cable force working during the deep space of the device inside the lubricator. After placing depth of the device inside the lubricator it lower and vertically mounted to the connection node [instructions for the integrated study of gas and gas condensate wells and reservoirs, Ed. Gasimova, Asaliah. - M.: Nedra, 1980. - S-212].

The disadvantages of this method are significant monetary costs on the use of lifting equipment; inability to use lifting equipment in case of maintenance work on wells, n is confined to remote areas with difficult climatic and geographical conditions, to which there are no access roads and the delivery of equipment are carried out by helicopter or all-terrain vehicle. Also considerable time spent on activities related to coordination of personnel working on lifting techniques and lubricator on the ground near the well. Operating personnel must be trained and have the tolerance to work in conjunction with lifting equipment.

Object of the invention is the location of underlying instruments in the lubricator without the use of lifting equipment.

The technical result is expressed in the expanded opportunity to conduct in-depth studies of wells in remote areas with difficult climatic and geographical conditions without the use of lifting equipment, the increase of economic efficiency of operations by reducing costs for the use of lifting equipment and the reduction in time to perform technological operations.

This technical result is achieved in that in the method of the premises underlying instruments in the lubricator, including the rise of the lubricator, its slope, maintaining the angle in the process of putting depth of the device, the reverse subsidence and vertical installation to the connection node with a fountain valve bore, the lubricator at the same time raise, incline, supports the ut angle 40÷ 45° from the vertical and at the same time lower, vertically mounted with a mechanism consisting of two lever arms connected to the worm screw intended for information and breeding by turning the handle.

The essence of the method is illustrated by drawings, where figure 1 shows the General scheme of the Assembly of the lubricator, mechanism, consisting of two lever arms connected to the worm screw, and the connection node of the fountain valve wells; figure 2 shows the location of the depth of the instrument in the lubricator.

The proposed method is implemented as follows. For implementing the method using a mechanism consisting of two lever arms 4 and 5, the United worm screw 6, and the lubricator 1, consisting of one or more partitions. Lower control arm bracket 5 is a support mechanism. The upper lever-arm 4 to rotate lubricator 1. The lever arms are at the ends of the collapsible sleeve 9 and 10, which are the connecting parts and are designed for multiple mounting lever mechanism with the base of the lubricator 2 and lubricator 1. Worm screw 6 is intended for information and cultivation of the lever arms 4 and 5 by rotation of the handle 7. The lubricator has a connection node of surface valves - based lubricator 2, which is go to the ne detail for the connection of the lubricator 1 with the flange of the buffer valve 8 or liner buffer depending on the type of installed trees at the well. For fast multiple connection Assembly 1 with the base of the lubricator 2 has a clutch 3. On the flange of the buffer valve 8 has consistently set the base of the lubricator 2. On the basis of the lubricator 2 by folding the sleeve 10 is mounted lower control arm 5. Upper arm-bracket 4 is installed in a vertical position by rotation of the handle 7 and the collapsible sleeve 9 is placed the assembled lubricator 1, consisting of one or more partitions. Rotation of the handle 7 a sectional lubricator cant in a position at an angle of 40÷45° from the vertical and is placed in a lubricator 1 deep unit 11 (figure 2). Further rotation of the handle 7 lubricator 1 is placed deep inside the device 11 simultaneously lowered and vertically mounted on the base 2. Clutch 3 connect the lubricator 1 with the base of the lubricator 2. The lubricator is ready to descend deep device 11 into the well.

After conducting in-depth research and hoisting depth of the device 11 from the well into the reservoir 1 by rotation of the handle 7 disconnected lubricator 1 simultaneously raise, incline and support at an angle of 40÷45° from the vertical. Remove deep unit 11 and put the following in-depth device. Rotation of the handle 7 lubricator 1 simultaneously lower, vertically mounted on the base 2 and connected with him motto is 3.

At the completion of the research works in the reverse order of disassemble and dismantle for transportation lubricator mechanism and the base of the lubricator.

The proposed method of the premises underlying instruments in the lubricator can be implemented as for the descent of underlying instruments with local registration and descend deep remote devices using lubricators different designs. Using this method eliminates the use of lifting equipment, enhances the ability to conduct in-depth studies of wells in remote areas with difficult climatic and geographical conditions; increases the economic efficiency of operations by reducing costs on the use of lifting equipment and cost reduction of time to perform technological operations.

The first method used when conducting in-depth studies in 2003 at well # 6401 of the Bovanenkovo oil and gas condensate field. At the time of the conduct in-depth studies of the use of lifting equipment was not possible. The lubricator and the mechanism was transported to the field by helicopter and delivered to the borehole all-terrain vehicle. The application of this method has paid off at the first usage.

The sources and the formation

1. Instructions for the comprehensive study of gas and gas condensate wells and reservoirs, Ed. Gasimova, Asaliah. - M.: Nedra, 1980. - S-212 (prototype).

The method of the premises underlying instruments in the lubricator, including the rise of the lubricator, its slope, maintaining the angle in the process of putting depth of the device, the reverse subsidence and vertical installation to the connection node with a fountain valve bore, wherein the lubricator at the same time raise, incline, support at an angle of 40-45° from the vertical and at the same time lower, vertically mounted with a mechanism consisting of two lever arms connected to the worm screw intended for information and breeding by turning the handle.



 

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