CN200986541Y

CN200986541Y - Underground litter detector

Info

Publication number: CN200986541Y
Application number: CNU2006200302534U
Authority: CN
Inventors: 岳为; 王春浦; 苟天成; 郑文照; 王宪良; 孙垂胜; 张子强; 龚召辉
Original assignee: 岳为
Priority date: 2006-03-17
Filing date: 2006-03-17
Publication date: 2007-12-05
Anticipated expiration: 2016-03-17

Abstract

The utility model discloses a well litter detector. The main part of the detector is a trapezoid, and the upper part of the detector is a short segment screw-connected with the under well string. The lower part of the detector is a cylinder sleeve, which is a cylinder inside which a plurality of via holes are evenly distributed. A ledge is arranged under the via holes, and each via hole is provided with a retraction rod, seal grease, an oil outlet, a check valve ball, a spring and an adjusting screw in turn from bottom to top. The retraction rod is a trapezoidal cylinder clamped on the ledge at the lower end of the via holes of the cylinder sleeve. For under well litter detection, type, shape and planar position of the under well litter can be accurately detected through identification of height of each retraction rod in the via holes of the cylinder sleeve to prevent well bottom pollution and repeated operation due to littering. The utility model can be repeatedly used at any time and thus reduces operation cost. Furthermore, the utility model does not contain hazardous lead molds any more and thus realizes healthy and environment-friendly operation.

Description

Down-hole junk detector

Technical field: the utility model relates to a kind of down-hole junk detector, the specific purpose tool of when belonging to oil exploitation the trouble of lost tool in hole top being surveyed.

Background technology: at present, when to trouble of lost tool in hole, when unclear the or sleeve pipe damaged condition of foreign matter situation is not quite clear, the instrument that adopts is that the end with tubing pup joint pours into columniform lead stamp, by tubing string lead stamp is arrived the shaft bottom down, the junk of down-hole is after impression is stamped on the surface of lead stamp, tubing pup joint is risen to ground, just judge the classification of down-hole foreign matter according to the impression on the surface of lead stamp, shape, planimetric position etc., go to select corresponding technology to handle according to judged result then, the defective that exists is: 1., because when lead stamp uses with usage quantity and does not have certain rules, the lead stamp long-term storage that performs can cause surface oxidation again, therefore need processing continually, cause the increase of cost; 2., the lead pig temperature of melting is higher, forming plumbous mist around can be in the working site after the thawing, it is urgent to cause the people to breathe, long-term work also can cause personnel's saturnism.3., when using in the down-hole because the random deformation of sleeve pipe, local impaired coming off fallen into the shaft bottom in the time of can causing lead stamp descending, and the evaluation of the junk top situation after printing is had certain interference.4., the operation that contacts with the junk top in the down-hole of lead stamp, rely on execute-in-place employee's experience fully, the grasp of exerting oneself is difficulty very, causes repetition operation because the error of exerting oneself causes the top bulk of lead stamp to come off into the shaft bottom through regular meeting.

Summary of the invention: the purpose of this utility model is in order to overcome the defective of prior art, design and a kind ofly can accurately survey trouble of lost tool in hole classification, shape, planimetric position, and health, environmental protection, can not come off because of foreign matter and cause the shaft bottom to pollute and repeat the down-hole junk detector of operation.

The utility model is a prismatoid, the pipe nipple of top for being threaded with running string, it is cylinder sleeve down, cylinder sleeve is the right cylinder of inner uniform several through holes, and the through hole lower end is provided with shoulder, in each through hole inside, expansion link, seal grease, oil-out, unidirectional valve ball, spring and set screw are installed from top to bottom successively, expansion link is trapezoidal right cylinder, is stuck on the shoulder of cylinder sleeve through hole lower end, and in each through hole of cylinder sleeve an independently hydraulic means.

Under the utility model detecting shaft during foreign matter, the length according to the expansion link of the hydraulic means in each through hole of cylinder sleeve after stressed can accurately be surveyed trouble of lost tool in hole classification, shape, planimetric position, avoids foreign matter to come off causing the shaft bottom to pollute and repeats operation; Can repeat repeatedly, use at any time, reduce operating cost; And do not re-use the lead stamp that human body is had injury, can realize the purpose of health, environmental protection, minimizing environmental pollution.

Description of drawings: accompanying drawing 1 is the utility model structural representation.

Embodiment: as can be known by accompanying drawing 1, the utility model is a prismatoid, the pipe nipple 1 of top for being threaded with running string, the bottom is a cylinder sleeve 9, pipe nipple 1 is connected by bolt 2 with the cylinder sleeve 9 of its underpart, cylinder sleeve 9 is the right cylinder of inner uniform several through holes, the through hole lower end is provided with shoulder, in each through hole inside, expansion link 8 is installed from top to bottom successively, seal grease 7, oil-out 6, unidirectional valve ball 5, spring 4 and set screw 3, expansion link 8 is trapezoidal right cylinder, is stuck on the shoulder of cylinder sleeve 9 through hole lower ends, and an independently hydraulic means promptly is installed in each through hole of cylinder sleeve 9.

When carrying out the down-hole detection operations, the utility model is threaded the back down to the trouble of lost tool in hole position with running string, expansion link 8 in each through hole of cylinder sleeve 9 is when visiting foreign matter, the up compression seal grease 7 that goes of meeting after stressed, when pressure acquires a certain degree, opening non-return valve 5 discharges unnecessary grease from oil-out 6, so a plurality of independently hydraulic means will be finished the detection operations to shaft bottom foreign matter top shape, in well, the utility model is proposed at last, according to the length that the expansion link in cylinder sleeve 9 each through hole 8 stretches, just can judge the classification of down-hole, down-hole foreign matter, shape and planimetric position etc.

Claims

1, a kind of down-hole junk detector, its body is a prismatoid, the pipe nipple (1) of top for being threaded with running string, the bottom is cylinder sleeve (9), pipe nipple (1) is connected by bolt (2) with the cylinder sleeve (9) of its underpart, it is characterized in that the right cylinder of cylinder sleeve (9) for inner uniform several through holes, the through hole lower end is provided with shoulder, in each through hole inside, expansion link (8), seal grease (7), oil-out (6), unidirectional valve ball (5), spring 4 and set screw (3) are installed successively from top to bottom; Expansion link 8 is trapezoidal right cylinder, is stuck on the shoulder of cylinder sleeve 9 through hole lower ends.