CN205330591U

CN205330591U - Exempt from welding cover and mill integration instrument of salvaging

Info

Publication number: CN205330591U
Application number: CN201620050688.9U
Authority: CN
Inventors: 张少英
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-19
Filing date: 2016-01-19
Publication date: 2016-06-22
Anticipated expiration: 2026-01-19

Abstract

The utility model discloses an exempt from welding cover and mill integration instrument of salvaging, it mills a section of thick bamboo and fishing tool including overlapping, and both connect the cooperation, milling a section of thick bamboo upper end open -ended inboard at the cover and setting up the internal thread, set up the external screw thread in the coupling outside of fishing tool's upper end, the cover mills a section of thick bamboo and passes through threaded connection with fishing tool, the cover to mill the tube length degree be 1 -10m, fishing tool external diameter less than or equal to 105mm, to mill an external diameter be 114mm or 116mm to the cover. The utility model discloses exempting from to weld the integrative instrument of salvaging that mills that overlaps and milling the cover and salvage the fishing tool who unites two into one, the cover mills salvage combination formula fishing tool and processes simple, convenience, and different integrated configurations has the function of difference, and when the pit shaft was handled to use left -hand thread drilling tool, the construction requirements of adaptable different hole conditions had better application prospect.

Description

One exempts from welding set milling fishing integrated tool

Technical field

This utility model relates to the big technical field of underground work, is specially one and exempts from welding set milling fishing integrated tool。

Background technology

In prior art, needing the set milling of lower drilling tool once solving to overlap during milling is salvaged, after tripping out set milling drilling tool, more lower drilling tool salvaging back-off is once, and after oil-water well set milling, quickly sand is buried fish and cannot be realized back-off and salvage。This traditional handicraft can not be reused, and fishing success ratio is low, and the well workover time is long, and cost is high。

Utility model content

The purpose of this utility model is in that to provide one to exempt from welding set milling fishing integrated tool, with the problem solving to propose in above-mentioned background technology。

For achieving the above object, this utility model provides following technical scheme: one exempts from welding set milling fishing integrated tool, and it includes casing section mill and fishing tool, and both connect cooperation；

Arranging female thread in the inner side of casing section mill upper end open, at the box cupling arranged outside external screw thread of the upper end of fishing tool, casing section mill and fishing tool are threaded connection；

Described casing section mill length is 1-10m；

Described fishing tool external diameter is less than or equal to 105mm, and casing section mill external diameter is 114mm or 116mm。

Further, described fishing tool drags for lance or sliding block trip spear for selecting die nipple, reversible。

Compared with prior art, the beneficial effects of the utility model are: it is will overlap milling and salvage the fishing tool united two into one that this utility model exempts from welding set milling salvaging integration tool, it is simple, convenient that combined fishing tool processing is salvaged in set milling, different combinative structurees has different functions, it is suitable for the construction requirement of different well ' s conditions, there is good application prospect。

Accompanying drawing explanation

Fig. 1 is that of the present utility model exempting from welds set milling fishing integrated tool structural representation；

Fig. 2 is the structural representation of the die nipple of this utility model embodiment；

Fig. 3 is the structural representation of the casing section mill of this utility model embodiment。

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments。Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection。

Referring to shown in Fig. 1, this utility model provides one to exempt from welding set milling fishing integrated tool, and it includes casing section mill 2 and fishing tool 1, and both connect cooperation；Arranging female thread 21 in the inner side of casing section mill 2 upper end open, at the box cupling arranged outside external screw thread 12 of the upper end of fishing tool 1, casing section mill 2 and fishing tool 1 are threaded connection, it is ensured that can bear bigger moment of torsion in construction and salvage load。

In the present embodiment, fishing tool can select die nipple, reversible to drag for lance, sliding block trip spear according to down-hole situation。

In the present embodiment, casing section mill length is 1-10m, uses with fishing tool apolegamy according to down-hole fish tubing string。

In the present embodiment, sleeve outer 139.7mm；Fishing tool external diameter is less than or equal to 105mm, and casing section mill external diameter is 114mm, 116mm, length 1-10m。

Connect die nipple for casing section mill below to illustrate as exempting from welding set milling salvaging integration tool:

1) outside original overhaul conventional Fishing Tools (die nipple, sliding block trip spear, reversible drag for lance) box cupling, car is buckled。

2) intercepting 0.5m with the casing section mill that one ruler cun is corresponding, one end knocks angle down, walks welding under convenient, and inside the other end, car button (outside button-type correspondence fishing tool institute's car button-type), is then welded on long casing section mill。

Operation principle: well workover construct in, under enter welding set milling salvage integration tool to fish tubing string overlap milling sand washing, turn on pump systemic circulation rinse complete, be made directly back-off fishing。

In the present embodiment, for the well of sand card (ash is solid), it is common that the releasing method salvaged after taking first set milling, labor intensity is relatively big, fishing success ratio is relatively low。Adopt set milling to salvage combined fishing tool, it is achieved set milling, sand washing, fishing integration, improve fishing success ratio。In addition this instrument adopts casing section mill to coordinate with fishing tool screwed connection, trips out fishing tool, unloads fish, namely can repeat use of going into the well。

Exempting from welding set milling salvaging integration tool is will overlap milling and salvage the fishing tool united two into one, it is simple, convenient that combined fishing tool processing is salvaged in set milling, different combinative structurees has different functions, is suitable for the construction requirement of different well ' s conditions, has good application prospect。

While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art, being appreciated that when without departing from principle of the present utility model and spirit and these embodiments can be carried out multiple change, amendment, replacement and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof。

Claims

1. exempt from welding set milling fishing integrated tool for one kind, it is characterised in that it includes casing section mill and fishing tool, and both connect cooperation；

Described casing section mill length is 1-10m；

2. according to claim 1 exempting from welds set milling fishing integrated tool, it is characterised in that described fishing tool drags for lance or sliding block trip spear for selecting die nipple, reversible。