API THREAD PROTECTORS SAWV DAWS NQI 4-1 / 2, 6-5 / 8
1. API Xov Thib Tiv Thaiv yog qhov yuav tsum muaj rau Casing, Tubing, tho kav dej thiab tho xim uas tuaj yeem tiv thaiv cov xov ntawm txhua qhov kawg ntawm cov yeeb nkab.
2. Feem ntau xov tiv thaiv tuaj yeem tiv thaiv koj cov xov txuas thiab cov yeeb nkab kawg ntawm kev puas tsuaj thaum tuav, thauj thiab cia.
Sau koj cov lus ntawm no thiab xa rau peb