According to the big data observation of HC360 trading market, in February 2018, the hot industry related to locks ranked sixth in the HC Purchasing and Supply Index. The specific data is the comprehensive purchasing index (815) and the comprehensive supply index (4620).
From February 2018, HC network locks related hot industry procurement and supply index analysis chart can be seen, the market comprehensive procurement index has declined, which is more obvious is the lock 0.69% and padlock 0.41%, etc., locks last week procurement and The overall supply index has a downward trend of 0.69%.
Editor in charge: Zhang Yu
Purpose and characteristics:
1) Two-stage cement injector is a kind of Cementing Tool commonly used in deep wells, exploratory wells and complex wells. It can change the conventional one-time cement injection into two-stage cement injection, so as to solve the problems of leakage, large cement volume and large temperature difference. Cementing problem.
3) With ** closing function, the outer wall of the upper part of the closing sleeve and the inner wall of the upper part of the outer cylinder are processed with serrated inverted teeth in opposite directions, which are used to lock the closing sleeve to slide up and down to achieve ** closing.
4) The ** advantage of the two-stage cement injector of this structure is that after the closing sleeve is closed in place, the upper limit block of the closing sleeve falls into the designed groove, and the entire inner sleeve is separated from the closing sleeve together with the opening plug and the closing plug. The effect of dead weight falls to the bottom of the well, reducing the drilling cost.
5) Appropriate material selection and fitting clearance were carried out to avoid tension or thermal expansion of the tool after going down the well to make the inner and outer sleeves form an interference fit, which is not conducive to opening and closing
Stage Cementer,Stage Cementing,single stage cementing,multi stage cementing
Puyang Junhong Rubber Co., Ltd. , https://www.pyjhxs.com