CN201521273U

CN201521273U - Encountering resistance drifting device adopting acoustic variable density logging method

Info

Publication number: CN201521273U
Application number: CN200920174582XU
Authority: CN
Inventors: 孟翔; 李志文; 刘铁卜
Original assignee: Daqing Petroleum Administration Bureau
Current assignee: Daqing Petroleum Administration Bureau
Priority date: 2009-10-20
Filing date: 2009-10-20
Publication date: 2010-07-07
Anticipated expiration: 2019-10-20

Abstract

The utility model relates to an encountering resistance drifting device adopting acoustic variable density logging method, and mainly solves the problem that the quality of acoustic variable density is impacted due to the collision and the impact of a drilling tool on the inner wall of a sleeve and the change of media in the sleeve during drifting operation performed by a drilling rod or an oil pipe. The device is characterized in that the upper and the lower ends of an oil pipe collar are connected with a plurality of weighted levers and a slurry storage cylinder connected with punches respectively; mud discharge passages are formed at the periphery of the slurry storage cylinder body; through holes communicated with the mud discharge passages are formed in the center of the slurry storage cylinder and the punches; the weighted levers are connected with a connecting rod and a connector through an oil pipe joint; both the inner chambers of the upper joint and the lower joint of an oil pipe take the shape of a groove matched with two ends of the connecting rod; the grooved inner chambers of the connecting rod in the oil pipe joint and the connector can move axially; and both the upper joint and the lower joint of the oil pipe adopt external threads which are connected with internal threads of the lower joint of the oil pipe and the upper connector which is provided with a hole formed at the top. The utility model has the advantages of 100 percent of drifting success rate; the variable acoustic density test after drifting cannot impact the evaluation of cement job quality; and the drifting operation cost is reduced.

Description

Sound becomes the drifting device that is hampered of logging well

Technical field:

The utility model relates to drifting device used in a kind of petroleum drilling engineering field, particularly becomes the drifting device that is hampered of logging well a kind of.

Background technology:

Adjusting aboveground application life, reduction cover loss rate in order to improve sleeve pipe, need in bunch tube, to lay a cement face control joint, and the well that uses this joint also can't be used clear water at present and does displacement fluid and replace cement paste, therefore after well cementing operation is finished, will be full of drilling fluid in the sleeve pipe.Because the acoustic variable-density instrument phenomenon that is hampered in sleeve pipe has appearred in the multiviscosisty deposition characteristics when drilling fluid does not flow, part well.The main method that addresses this problem at present is to adopt drilling rod or oil pipe to carry out the drifting operation, the unfavorable factor that this operating type brings mainly be the drifting activity duration long, labour intensity is big, cost is higher relatively; And difficult quality guarantee, the splicing index that is used for the evaluating cementing quality after the drifting obviously descends, the test result that becomes sound takes place sharply to change, drilling tool caused forming the microgap between cement sheath and the casing wall to the variation of medium in the collision impact of internal surface of sleeve pipe and the sleeve pipe when its mechanism mainly was drifting, had influence on logger to the detection of cementing quality and hand over well work.

The utility model content:

Technical problem to be solved in the utility model is when overcoming the employing drilling rod that exists in the background technology or oil pipe and carrying out the drifting operation because drilling tool influences the problem of sound variable mass to the variation of medium in the collision impact of internal surface of sleeve pipe and the sleeve pipe, become the well logging drifting device that is hampered for a kind of and provide, this becomes that well logging is hampered that drifting device drifting operating cost is low, do not influence variable mass after the drifting operation.

The invention for solving the technical problem can reach by following technical solution: this becomes the well logging drifting device that is hampered and comprises tubing coupling, tubing coupling connects some weighted levers up and down respectively and is connected to the slurry storing tube of drift, around the slurry storing tube body spoil disposal passage is arranged, there is the through hole with the spoil disposal channel connection at slurry storing tube and drift center; Connect by tubing coupling between some weighted levers, weighted lever connects little multidiameter shape connecting rod and the connector in big centre, two ends by oil connection, oil connection and connector are divided into upper and lower joint of oil pipe and upper and lower connector respectively, the inner chamber of oil pipe top connection and lower union joint is all the fluted body that matches with the connecting rod two ends, but connecting rod is at the fluted body inner chamber axial motion of oil connection and connector, oil pipe top connection and lower union joint are all external screw thread, and the internal thread that has the upper binding head in hole with oil pipe lower contact and top is connected.

Circumferential 90 degree of described tubing coupling are opened bar-shaped trough, and groove is embedded with the bar shaped centralizer.

The utility model is compared with the above-mentioned background technology can have following beneficial effect: this becomes well logging and is hampered the drifting device owing to adopt said structure, the drift that is driven by the weighted lever of rope traction below the slurry storing tube that is attached thereto pumps, drift impacts the mud of deposition under the impact force action of weighted lever, the mud of multiviscosisty is discharged by the spoil disposal passage around the slurry storing tube, avoided variation to medium in the collision impact of internal surface of sleeve pipe and the sleeve pipe, can finish drifting operation, drifting success rate 100% safely, smoothly; Sound becomes test splicing index and the basic no change of the preceding contrast of drifting after the drifting, does not influence the evaluation of cementing quality; Equipment is simple, and is easy to operate, reduced labour intensity and drifting operating cost.

Description of drawings:

Accompanying drawing 1 is a structural representation of the present utility model;

Accompanying drawing 2 is middle part radial cross-section of the utility model tubing coupling.

Among the figure: 1-drift, 2-slurry storing tube, 3-tubing coupling, 4-centralizer, 5-groove, 6-weighted lever, 7-spoil disposal passage, the top connection of 8-oil pipe, the lower contact of 9-oil pipe, 10-upper binding head, 11-lower union joint, 12-hole, 13-connecting rod.

The specific embodiment:

Below in conjunction with accompanying drawing will the utility model is described in further detail:

Accompanying drawing 1 is in conjunction with shown in Figure 2, this becomes the well logging drifting device that is hampered and comprises tubing coupling 3, connect some weighted levers 6 in the tubing coupling 3, some 6 of weighted levers have tubing coupling 3 to connect, tubing coupling 3 circumferential 90 degree are opened bar-shaped trough 5, inlay bar shaped centralizer 4 in the groove 5, centralizer 4 materials are the nylon polymer, with firm weighted lever 6 and cushion this drifting device and wall collisions; Tubing coupling 3 lower thread connect slurry storing tube 2, and slurry storing tube connects drift 12 times, around slurry storing tube 2 bodies three spoil disposal passages 7 are arranged, and there is the through hole that is communicated with spoil disposal passage 7 at slurry storing tube 2 and drift 1 center; Weighted lever 6 connects little multidiameter shape connecting rod 13 and the connector in big centre, two ends by oil connection, oil connection is divided into oil pipe top connection 8, oil pipe lower contact 9, connector is divided into upper binding head 10, lower union joint 11, oil pipe top connection 8 is all fluted body with the inner chamber of lower union joint 11, match with connecting rod 13 two ends of multidiameter shape, connecting rod 13 can axial motion at the fluted body inner chamber of oil pipe top connection 8 and lower union joint 11, also rotatable, to alleviate the torsion of the wire rope that top connects; Oil pipe top connection 8 is all external screw thread with lower union joint 11, is connected with the internal thread of oil pipe lower contact 9 and upper binding head 10; Upper binding head 10 tops have hole 12, are used to connect the wire rope of salvaging on the car.

This become well logging be hampered the drifting device the course of work into: the wire rope that will salvage on the car is connected on the hole 12 at upper binding head 10 tops by fixed pulley, and after fixing with jackscrew, the weighted lever 6 of wire rope below connector, connecting rod 13 and oil connection traction pumps the drift 1 below the slurry storing tube 2 that is attached thereto, drift 1 impacts the mud of deposition under the impact force action of weighted lever 6, the mud of multiviscosisty is discharged by three spoil disposal passages around the slurry storing tube 27 after entering into slurry storing tube 2 by the through hole at slurry storing tube 2 and drift 1 center again; For avoiding threading off owing to the torsion of wire rope makes weighted lever 6, slurry storing tube 2 and the drift 1 of lower thread connection, the connecting rod 13 that wire rope connects below can rotate and axial motion in the groove shaped inner chamber of oil connection and connector, alleviates this torsion of wire rope; Ballistic motion repeatedly reaches the purpose of mud local circulation through drift 1, mud can be stirred, and thoroughly solves the problem of livering deposition; Instrument is determined the number of used weighted lever 6 when becoming detection according to sound apart from the distance of the sound position that is hampered.

Claims

1. a sound becomes the drifting device that is hampered of logging well, comprise tubing coupling (3), it is characterized in that: tubing coupling (3) connects some weighted levers (6) up and down respectively and is connected to the slurry storing tube (2) of drift (1), around slurry storing tube (2) body spoil disposal passage (7) is arranged, there is the through hole that is communicated with spoil disposal passage (7) at slurry storing tube (2) and drift (1) center; Connect by tubing coupling (3) between some weighted levers (6), weighted lever (6) connects little multidiameter shape connecting rod (13) and the connector in big centre, two ends by oil connection, oil connection and connector are divided on the oil pipe respectively, lower contact (8,9) reach, lower union joint (10,11), oil pipe top connection (8) is all the fluted body that matches with connecting rod (13) two ends with the inner chamber of lower union joint (11), connecting rod (13) but at the fluted body inner chamber axial motion of oil connection and connector, oil pipe top connection (8) is all external screw thread with lower union joint (11), and the internal thread that has the upper binding head (10) of hole (12) with oil pipe lower contact (9) and top is connected.

2. sound according to claim 1 becomes the drifting device that is hampered of logging well, and it is characterized in that: circumferential 90 degree of described tubing coupling (3) are opened bar-shaped trough (5), and groove (5) is embedded with bar shaped centralizer (4).