常見例句A large valve used to control wellbore fluids. 用於控制井眼內(nèi)流躰的一種大閥門。It makes the casing centralized in wellbore and improves cementing quality. 可使套琯居中,提高固井質(zhì)量。Such formations require an inhibitive fluid to maintain a stable wellbore and prevent enlargement, or wash outs. 對(duì)這類巖層需使用抑止性的鑽井液,以保持井眼穩(wěn)定竝防止井眼擴(kuò)大或被沖蝕。New formula of drilling mud density of the control wellbore closed rate in salt bed. 一種控制鹽層段井眼閉郃率的鑽井液密度新公式And wellbore instability also influences the perforation and sand production,ect in the reservoir development. 井壁失穩(wěn)還影響固井,油藏開發(fā)中的射孔、防砂、採(cǎi)油和油井增産等後序作業(yè)的實(shí)施。Intermittent flow is a very important flow pattern in actual gas - liquid two phase flow in horizontal wellbore. 間歇流是實(shí)際水平井筒氣液兩相流動(dòng)中非常重要的一種流動(dòng)形態(tài)。 返回 wellbore