B/D

B Annulus

B Profile

Babbitt

Back Flow

Back Flushing

Back-in (contract)

Back Off

Back Pressure

Back Pressure Valve

Back Scuddling

Back-Side

Back Surge

Back-Up Ring (seals)

Back-Up Wrench or Tong

Back Wash

Bactericide

Bacterial Degradation

Bacterial Remediation

Baffles

Bail

Bailer

Balance Point

Balance Point (coiled tubing or snubbing)

Balanced Plug

Balancing Agreement

Ball (tool operation)

Ball Catcher

Ball Diverter

Ball Dropper

Ball Operated

Ball-Out

Ball Sealers

Ball Valve

Ballooning (drilling)

Ballooning (pipe)

Banana Blade

Band or Banded

Bar (pressure)

Bar (geologic)

Bar-Vent (perforating)

Barefoot Completion

Barge

Barite

Barite Plug

Barium Sulfate (scale)

Barrel

Barrel Equivalent

Barrel Pump

Barrels of Oil Equivalent, BOE

Barrier (NORSOK definition)

Barrier Coating (corrosion)

Barrier Coating (protective)

Basalt

Base Fluid

Base Gas

Base Management

Base Map

Base Pipe

Basement Rocks

Basic Sediment and Water or BS&W

Basin

Basket or Basket Sub

BaSO4

Batch Mixing

Batch Treating (chemical treating)

Batholith

Battery (fluid treating)

Baume (density)

Bauxite

Bayrite

Bbl

Bc (drilling)

Bcf

Bead Tracer

Beam Pump

Bean

Bean-Up Strategy

Bearden Unit of Consistency

Beach Marks (failure/crack development)

Bed

Bed Filtration

Bed Rock

Bed Wrap

Bedding Plane

Behind Pipe Reserves

Belching

Bell Nipple

Belt Effect

Benchmark

Bend Radius

Bending Cycle (coiled tubing)

Beneficiation

Bent Sub

Bentonite

Benzene

Benzoic Acid Flakes

Berea Sandstone

Bernoulli's Equation

Beta Factor (flow)

Beta Rating (filtration)

Beta Wave (gravel packing)

BF

BFE

BG

BH (perforating)

BH (well position)

BHA

BHCIP

BHCP

BHCS

BHCT

BHFP

BHFT

BHG

BHI

BHIP

BHL

BHP

BHp

BHPI

BHS

BHSIP

BHST

BHT

BHTP

BHTV

Bholin

Bias Weld

BiC

Bicarb

Bicarbonate

Bi-Center Bit

Bi-Directional Valve

Big Hole Charge (perforating)

Bi-Metal Corrosion

Binder (coating)

Bingham Plastic

Bioaccumulation

Biocide

Biodegration

Biogenic Gas

Biogenic Source (sedimentary rocks)

Biogenic Theory

Biomass

Biophasic

Biopolymer

Biostratigraphy

Biot

Bioturbation

Bird

Bit

Bit Breaker

Bit Record

Bit Weight (drilling)

Bit Whirl (drilling)

Bitumen

Bituminous Coating

BJ

BKB

BL

Black Oil

Blaine Fineness

Blank

Blank Off

Blanking Plug

Blast Joint

Blasting Cap

Bleed Off

Bleeding Core

Blender

Blind Box

Blind Flange

Blind Nipple

Blind Pool

Blind Rams

Blind Zone

Blinding (screen)

Blistering (elastomer)

Blistering (steel)

BLM

BLM (wireline)

Block (flow)

Block (lease)

Block (rigging)

Block Squeeze

Block Valve

Blooie Line

Blow Down

Blowdy

Blowout

Blowout Preventer or BOP

BLPD

Blue Gas

BM

BML (subsea)

BMX

Bo

BOC

BOD (design)

BOD (reaction)

Body

Body Lock Rig

BOE

Boiling Point

Boll Weevil (various)

BOMA

Bomb

Bomb Hanger

Bond

Bonnet

Bonus Money (contract)

Booster Cap

Booster Pump (pipeline)

Boot Sub

BOP

Borate

Borax Logging

Borehole

Borehole Compensated Sonic

Borehole Televiewer

BOSS

BOT

Bottle Neck

Bottom Casing Packoff

Bottom Hole Assembly or BHA

Bottom Hole Choke

Bottom Hole Gas Separator

Bottom Hole Pressure or BHP

Bottom Hole Sampler

Bottom Hole Temperature

Bottom Out

Bottom Plug

Bottom Shot Detector

Bottoms Up

Bound Fluid Log

Bound Water

Bow Spring Centralizer

Bowl

Box

Box Tap

Boycott Settling Range

BP

BP (well plugging)

BPD

BPFlux™

BPM

BPV

BR

Brackish Water

Bracelet Anodes

Braden Head

Braided Stream

Braided Wireline

Brake (drilling)

Branch Connection

Break an Emulsion

Break Circulation

Break-out

Breakdown

Breaker

Breaking Down (drill string)

Breakthrough

Breccia

Brent

Bridge

Bridge Plug

Bridging

Bridging Material

Bridle (beam lift)

Bridle (logging)

Bright Spot

Bright Water™

Brine

Brinell Hardness

British Thermal Unit or BTU

Brittle Fracture

Broach

Broaching (flow)

Brookfield Rheometer

Brownfield

Brownian Motion

BRT (drilling)

BS

BS&W

BSI

BSR

BtB

BtBcp

BTMS

BTU

BTX

BU

Bubble Flow

Bubble Point

Buck Up

Buckling

Buffer

Build Angle

Bulk Density

Bulk Modulus (K)

Bull Plug

Bull Wheel

Bullet Gun

Bullheading

Bump Down

Bump The Plug

Bunker C Oil

Buoyancy

Buoyed Weight

Burn Over

Burner Capacity or Rating (flare)

Burning Shoe

Burr

Burst

Burst Disk

Burst Rating

Butadiene

Butane

Butt Fracture (in coal)

Butt Weld

Butterfly Valve

Button Slip

Button-Up

Buy Back Agreement

BV

BVI (logging)

BW Rod Thread

BWOB

BWOC

BWOW

BWPD

BX Ring

Bypass (piping)

Byproduct (reaction)