| BT | Berth Terms | | | | Details |
| BT | BHUTAN | | | | Details |
| BT | Broken Teeth/Cutters | | | | Details |
| BT | Benoist(Bethel) sand | | | | Details |
| BT | Beark Through | | | | Details |
| bt | bit | | | | Details |
| ABT | ABouT | | | | Details |
| ABT | Ambitious Business Target | | | | Details |
| Bt·l | barrels of mud | | | | Details |
| BTA | Basic Travel Allowance | | | | Details |
| BTA | Business Travel Approval | | | | Details |
| BtB | beyond the best | | | | Details |
| BtBcp | beyond the best common process | | | | Details |
| BTC | Best Technical Case | | | | Details |
| BTC | buttress thread coupling | | | | Details |
| BTDC | before top dead center | | | | Details |
| BTEX | Benzene, Toluene, Ethyl Benzene and Xylene | | | | Details |
| BTFL/V | butterfly valve | | | | Details |
| BTHF | Below Tubing Head Flange | | | | Details |
| BTHL | Bottom Hole Log | | | | Details |
| BTL | Biomass-to-liquid | | | | Details |
| BTL | Borehole Televiewer | | | | Details |
| BTL | Bantry Terminals Ltd. Ireland | | | | Details |
| BTM | Business Technology Mapping | | | | Details |
| btm | bottom | | | | Details |
| btm | (d) bottom(ed) | | | | Details |
| btm | chk bottom choke | | | | Details |
| BTMS | bottoms | | | | Details |
| BTN | BHUTAN | | | | Details |
| BTO/C | break to open/close (valve torque) | | | | Details |
| btry | battery | | | | Details |
| BTU | British Thermal Unit (see comment!) | | | | Details |
| BTU | British Thermal Unit | | | | Details |
| Btu | British thermal units | | | | Details |
| Btu/lb | British thermal units per pound | | | | Details |
| Btu/scf | British thermal units per standard cubic feet | | | | Details |
| BTUs | British thermal units | | | | Details |
| BTW | By the way | | | | Details |
| btw | between | | | | Details |
| BTWLD | butt weld | | | | Details |
| BTX | benzene, toluene, xylene | | | | Details |
| BTX | benzene, toluene, and xylene | | | | Details |
| BTX | benzene toluenexylene(unit) | | | | Details |
| CBT | Computer Based Training | | | | Details |
| CBT | cement bond tool | | | | Details |
| CBTT | Combinable Borehole Televiewer Tool | | | | Details |
| CDBTF | common data base task force | | | | Details |
| ftBTHF | feet Below Tubing Head Flange | | | | Details |
| GBT | Gravity Base Tank | | | | Details |
| MBT | Methylene Blue Dye test (see comment) | | | | Details |
| MBT | Methylene Blue Test (see comment) | | | | Details |
| MBT | methylene blue test | | | | Details |
| mBTHF | meters Below Tubing Head Flange | | | | Details |
| MBTU | thousand British thermal units | | | | Details |
| MMBTU | Million British Thermal Unit (See comment on BT) | | | | Details |
| MMBtu | million British thermal units | | | | Details |
| MMBTU | Million Metric British Thermal Unit | | | | Details |
| MMBtu/hr | million British thermal units per hour | | | | Details |
| MMBtu/scf | million British thermal units per standard cubic foot | | | | Details |
| MPBT | Mechanical Plug Back Tool (Schlumberger product) | | | | Details |
| MPBT | Posiset Thru-Tubing Mechanical Plug-Back | | | | Details |
| PBTD | Plug Back Total Depth | | | | Details |
| PBTD | Plugged-Back Total Depth | | | | Details |
| PBTD | plug back t otal depth | | | | Details |
| PBTD | plugged back total depth | | | | Details |
| SBT | Segmented Bond Tool | | | | Details |
| SBT | Segregated Ballast Tanks | | | | Details |
| SBT | Cement Bond Tool (BAKER Atlas) | | | | Details |
| SBT | Segmented Bond Log | | | | Details |
| SWBT | Sea Water Break Through | | | | Details |
| Swbt | water saturation at waterflood breakthrough | | | | Details |
| TBT | Tool Box Talk | | | | Details |
| TBT | Through Bore Tree | | | | Details |
| TBT | Thru Tubing Bridge Plug | | | | Details |
| TBT | True Bed Thickness | | | | Details |
| TBT-DB | Thru Tubing Dump Bailer | | | | Details |
| WBT | Water Breakthrough | | | | Details |
| BTT | Bohrhole Televiewer Tool | | | | Details |
| DPBT | Dual Profile Build-up Test | | | | Details |
| BTN | Bhutan Ngultrum | | | | Details |
| wbt | Wellbore Diagram Template | | | | Details |
| abtasten | to tag something from below in well like tagging the upper edge of a open hole window opened for OHGP out of the casing with a hydraulic opening under-reamer. | | | | Details |
| PBT | Pay Back Time | | | | Details |
| BTT | BreakThrough Time | | | | Details |
| BTF | Betriebsfeuerwehr | Plant fire brigade | | | Details |
| tBT | time to breakthrough | | | | Details |
| BTFT | barrel per ten feet | | | | Details |
| BTN | Bhutan ngultrum | | | | Details |
| BTU | British thermal unit (international) | | | | Details |
| Btu | British thermal unit (international) | | | | Details |
| Btu/(h.degF.ft2) | BTU per hour per degree fahrenheit per square foot | | | | Details |
| Btu/h.degF.ft2 | GeoFrame legacy unit | | | | Details |
| Btu/h.oF.ft2 | GeoFrame legacy unit | | | | Details |
| BTU | Business Travel Unlimited | | | | Details |
| AHBTHF | Along hole below tubing head flange | | | | Details |
| BTI | Big Ticket Item | | | | Details |
| SBT | Segmented Bond Test Similar to CBL but it is usually not as effective | | | | Details |
| PBT | Profit Before Tax | | | | Details |
