Get in touch with Welong Company
Karry
I write about well-control equipment and the procedures that surround it. My articles explain blowout preventers and how wellhead equipment, operating steps, and certification records fit together. I focus on the questions readers should raise about system configuration and evidence, rather than treating any one device as the entire control plan.
Drilling Hose Engineering Guide: API 7K 7500 psi Rotary and Vibrator Mud Lines
A Drilling Hose forms the high-pressure flexible link in an oil well rig’s mud circulation circuit, carrying abrasive drilling fluid from the static standpipe manifold into the vertically moving rotary swivel or top drive. While rigid steel standpipe lines handle…
BOP Hose Engineering Guide: API 16D Fire-Resistant 5000 psi Control and Safety
A BOP Hose carries high-pressure hydraulic fluid from the rig’s accumulator control unit to the blowout preventer stack during drilling and well-servicing operations. Unlike circulation lines that pump mud downhole, these flexible control lines transmit the hydraulic energy needed to…
Cement Head: A Practical Guide to Functions, Types, and Selection
A cement head is a surface fitting at the top of a casing or running string to hold and release cementing plugs while connecting the pumping path to the string. The more difficult element is evidence-based fit. An indicator doesn’t…
Manual Tong Guide: Parts, Capacity, Inspection and Care
RIG FLOOR EQUIPMENT GUIDE A Manual Tong is a hinged gripping wrench used to make up and break out tubular connections. Its jaws grip the approved outside surface while the handle transmits turning force. A usable assembly needs the right…
Oilfield Hoses Explained: Types, Construction and Service Life
Oilfield Hoses transport drilling fluid, transfer water and petroleum, deliver hydraulic power, and perform special well-control duties. The oil and gas industry uses several different assemblies under that name. A hose that supplies water to a frac site performs a…
Oilfield Tong & Bucking Unit Guide to Connection Quality
Work performed by oilfield Tong & bucking unit is complete when the applicable makeup requirements of the identified connection are met, and the records support an authorized disposition. Torque is one of the inputs. Thread condition, compound, alignment, the measured…
Float Shoe, Float Collar & Guide Shoe: A Cementing Guide
Float shoe, float collar, and guide shoe describe three jobs at the bottom of a casing string. Confusing guidance, plug landing and backflow control can leave a cementing program with the wrong equipment arrangement. First, identify the flow path, then…
Casing Centralizer Guide: 3 Checks Before You Choose
Casing Centralizer Guide: 3 Checks Before You Choose A casing centralizer is a mechanical device fitted around casing to keep the pipe away from the wellbore wall. Its contribution to a cement job starts with clearance. Selecting this casing equipment…
Drill Bits (Tricone & PDC): Dull Forensics and Next-Run Review
This document describes post-run evidence, dull condition review, failure hypotheses and what’s learned for the next run. The approved drilling program, controlled supplier documents and responsible engineering authority remain the major controls. Drill bits (Tricone & PDC) should be reviewed…
How Casing and Tubing Heads Work Across the Wellhead Stack
The selection of Casing Head and Tubing Head isn’t a matter of matching catalog names. A casing head supports and seals casing strings near the lower wellhead; a tubing head supports the production-tubing hanger and contains the tubing-to-production-casing annulus above…
