API Circulating cross over Sub oil drilling rig equipment tool

Production description of API Circulating cross over Sub    

The circulating sub is a specialized tool for circulating drilling fluid when running in casing on the way or finishing running casing downhole.According to actual needs.there are circulating sub with casing thread and circulating sub with union thread.

the oil liquid of tube in the upper pump should be drained off during the whole barrel tubing type pump and special pump that usually be used in domestic workover treatment ,the work need the bottom of pump to connect a bleeder to be fullfilled.

The working principle is :the bleeder shoud be connected to the bottom of pump and the upper part of standing valve, when the oil need be discharged during the oilfield work ,lift the sucker rod string and plunger assembly out of oil well ,put the impulse lever into the pipeline, the impulse lower down to the bottom and break off the draining pins of bleeder ,the upper oil liquid can be discharged through the draining pins. Currently, the bleeder that we maufactured contain two kinds of dimension, the usage and effect are same.

There are two fixed modes of draining pins :

1.welded type;

2.threaded connection type.The surface treatment contain;

3 methods: phosphorization,blueing and galvanization.

Parameter details of API Circulating cross over Sub           

1. Length:200mm, diameter: 90mm, connecting oil pipe thread 2 7/8EUE/NUE, oil hole number: 6

2. Length:186mm, diameter: 90mm, connecting oil pipe thread 2 7/8EUE/NUE, oil hole number: 2

Production view of API Circulating cross over Sub          

Company view of Rugao Yaou