CN202866719U

CN202866719U - Fishing tool

Info

Publication number: CN202866719U
Application number: CN 201220431661
Authority: CN
Inventors: 刘喜林; 石峰; 范炜; 陈海军; 王磊; 姬兴隆
Original assignee: China National Petroleum Corp; Liaohe Petroleum Exploration Bureau
Current assignee: China National Petroleum Corp; Liaohe Petroleum Exploration Bureau
Priority date: 2012-08-28
Filing date: 2012-08-28
Publication date: 2013-04-10
Anticipated expiration: 2022-08-28

Abstract

The utility model relates to a fishing tool which is used for fishing underground irregular falling articles. The fishing tool comprises a male cone and a female cone, an upper connector is arranged at the upper end of the male cone, the outer wall of the male cone and the inner wall of the female cone are connected and are fixed through a countersunk head screw, a water hole is arranged in the center of the male cone, a hard alloy block is installed at the lower end of the male cone, and a sleeve milling head is arranged at the lower end of the female cone. The fishing tool achieves sleeve milling fishing and grinding milling fishing on irregular falling articles, is high in success rate for fishing irregular falling articles, reduces construction procedures, shortens construction period and overcomes the defects that no existing corresponding fishing tool can fish irregular articles, and fishing success rate is low.

Description

A kind of fishing tool

Technical field:

The utility model relates to the irregular falling object fishing tool in a kind of down-hole.

Background technology:

Along with the oil-gas field development time increases, part casing damage in oil-water well and be subjected to the impact of down-hole geological condition, the oil gas water well hole condition is variation increasingly, the part well seriously shake out and the accident such as trouble of lost tool in hole increasing, the salvaging of many regular junks has had rich experience at present, and has developed a large amount of corresponding fishing tools.But, there is not corresponding fishing tool optional for irregular the following of the salvaging of irregularly shaped object yet, for example, unclear, the complicated junk of fish and heavy wool pipe are split the disconnected complicated situations such as top of fish that form in salvaging after irregular top of fish, the pumpingh well sheath that coiling forms for many sucker rods comes off, the well, fishing is very difficult, and, scrap in case process bad construction period growth and even this well of just easily causing.

The utility model content:

The technical problems to be solved in the utility model provides a kind of fishing tool, and this instrument realized that the cover to irregular junk mills and salvaged and milling is salvaged, and salvages irregular junk success rate high, minimizing working procedure and construction period.Overcome existing salvaging to irregularly shaped object and do not had corresponding fishing tool, the deficiency that fishing success ratio is low.

Technical solution adopted in the utility model is: a kind of fishing tool comprises die nipple and female coupling tap; The die nipple upper end is designed with top connection, and the die nipple outer wall is connected with the female coupling tap inwall and fixes by sunk screw, and the die nipple center has hydrophthalmia, and the die nipple lower end is equipped with hard alloy blocks, and the female coupling tap lower end is equipped with the cover milling head.

The beneficial effects of the utility model are: the utility model is because the mode that has adopted die nipple to match with female coupling tap, thereby have cover to irregular junk and mill and salvage and the function of milling salvaging, salvage irregular junk success rate high, reduce working procedure and construction period, reduced the salvaging cost.

Description of drawings:

The utility model is described in more detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is structural representation of the present utility model.

The specific embodiment:

As shown in drawings, a kind of fishing tool comprises die nipple 1 and female coupling tap 3; Die nipple 1 upper end is designed with top connection 2, and die nipple 1 outer wall is connected with female coupling tap 3 inwalls and is fixing by sunk screw 4, and die nipple 1 center has hydrophthalmia 5, and die nipple 1 lower end is equipped with hard alloy blocks 6, and female coupling tap 3 lower ends are equipped with cover milling head 7.

Be understandable that, above about specific descriptions of the present utility model, only for the utility model being described and being not to be subject to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as satisfy, all within protection domain of the present utility model.

Claims

1. a fishing tool comprises die nipple (1) and female coupling tap (3); It is characterized in that: die nipple (1) upper end is designed with top connection (2), die nipple (1) outer wall is connected with female coupling tap (3) inwall and is fixing by sunk screw (4), die nipple (1) center has hydrophthalmia (5), die nipple (1) lower end is equipped with hard alloy blocks (6), and female coupling tap (3) lower end is equipped with cover milling head (7).