TEXAS DRILLING OPERATIONS CERTIFICATION EXAM COMPLETE PRACTICE TEST
BANK QUESTIONS AND ANSWERS | VERIFIED SOLUTIONS | UPDATED 2026/2027
STUDY GUIDE
Examiner/Administrator: Texas Railroad Commission (RRC) / Petroleum Extension
Service (PETEX) Industry Standards Alignment
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TEXAS DRILLING OPERATIONS CERTIFICATION EXAM
2026/2027 EDITION
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
COMPLETE PRACTICE EXAM
100 MULTIPLE-CHOICE QUESTIONS
EXACT OFFICIAL COUNT: 100 QUESTIONS
PASSING SCORE: 70%
TESTING TIME: 120 MINUTES
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
TEXAS DRILLING OPERATIONS & WELL CONTROL STANDARDS || ALIGNED WITH
CURRENT OIL & GAS INDUSTRY BLUEPRINTS || DRILLING RIG OPERATIONS || WELL
CONTROL & SAFETY COMPLIANCE || OSHA & RRC REGULATORY ALIGNMENT ||
PROFESSIONAL STUDY GUIDE || 100% VERIFIED EDUCATIONAL CONTENT ||
COMPREHENSIVE CERTIFICATION PREPARATION || PREPARED FOR DRILLING
PERSONNEL, FLOORHANDS, DERRICKHANDS, MOTORHANDS & RIG OPERATORS ||
PROFESSIONAL EXAMINATION USE ONLY
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Safety Regulations, Rig Safety & Operational Compliance
Q1. During a drilling operation in the Permian Basin, a floorhand notices hydraulic fluid
leaking near the rotary table while pipe handling operations are ongoing. What is the
MOST appropriate immediate action according to standard drilling safety protocols?
,A. Continue operations until the current stand is completed
B. Notify the driller and isolate the hazard before resuming work
C. Apply absorbent material after tripping operations conclude
D. Wash the fluid into the drainage trench to avoid slips
Correct Answer: 🔴 B. Notify the driller and isolate the hazard before resuming
work
Explanation: 🔹 Hydraulic leaks near active rig equipment create immediate slip, fire,
and pressure-related hazards. Industry safety standards require personnel to report the
issue, isolate affected equipment if necessary, and mitigate the hazard before operations
continue. Option A ignores immediate danger. Option C delays corrective action. Option
D violates environmental and safety regulations by improperly disposing contaminants.
Q2. A driller is conducting a Job Safety Analysis (JSA) before casing operations begin.
Which element is MOST critical to include in the JSA?
A. Estimated fuel consumption for the shift
B. Personnel vacation schedules
C. Identification of pinch points and suspended load hazards
D. Historical production rates from nearby wells
Correct Answer: 🔴 C. Identification of pinch points and suspended load hazards
Explanation: 🔹 A JSA focuses on identifying operational hazards associated with specific
tasks. During casing operations, suspended loads, pinch points, and struck-by hazards
are major risks. Fuel use and production history are unrelated to immediate task safety.
Vacation schedules have no operational safety relevance.
Q3. Which federal regulation primarily governs occupational safety requirements on
U.S. drilling rigs?
A. EPA Clean Water Act
B. OSHA drilling and general industry standards
C. SEC operational disclosures
D. Federal Aviation Regulations
,Correct Answer: 🔴 B. OSHA drilling and general industry standards
Explanation: 🔹 OSHA establishes workplace safety regulations covering hazard
communication, fall protection, PPE, lockout/tagout, and drilling-related operations. EPA
rules focus on environmental protection rather than worker safety oversight. SEC and
aviation regulations are unrelated to drilling rig safety management.
Q4. During rig-up operations, a crane operator loses visual contact with the signal
person. What should occur NEXT?
A. Continue movement slowly until visibility improves
B. Stop crane movement immediately until communication is restored
C. Sound the horn and proceed cautiously
D. Lower the load without instructions
Correct Answer: 🔴 B. Stop crane movement immediately until communication is
restored
Explanation: 🔹 Crane operations require uninterrupted communication between the
operator and signal person. Loss of communication creates severe struck-by and crushing
hazards. Continuing movement without guidance violates lifting safety protocols. The
safest response is immediate cessation of movement until coordination resumes.
Q5. A worker enters a mud tank compartment without atmospheric testing because
the task is expected to last only two minutes. Which statement BEST describes this
action?
A. Acceptable if another worker remains nearby
B. Acceptable for short-duration tasks
C. Unsafe because confined-space entry procedures were bypassed
D. Safe if respiratory protection is available
Correct Answer: 🔴 C. Unsafe because confined-space entry procedures were
bypassed
, Explanation: 🔹 Confined-space regulations apply regardless of entry duration.
Atmospheric testing, ventilation, permits, and standby procedures are essential because
hazardous gases or oxygen-deficient conditions may exist unexpectedly. Time duration
does not eliminate confined-space risks.
Q6. Which piece of personal protective equipment is MOST essential when handling
drilling chemicals containing caustic additives?
A. Welding shield
B. Arc-flash blanket
C. Chemical-resistant gloves and splash protection
D. Hearing protection only
Correct Answer: 🔴 C. Chemical-resistant gloves and splash protection
Explanation: 🔹 Caustic drilling additives can cause severe skin and eye injuries. Proper
PPE includes chemical-resistant gloves, goggles, and face shields where splashing may
occur. Welding and electrical PPE are unrelated to chemical handling hazards. Hearing
protection alone is insufficient.
Q7. A derrickhand observes unstable stacking of drill pipe on the pipe rack. What
hazard is MOST likely?
A. Static electricity buildup
B. Dropped-object and roll-over incidents
C. Mud contamination
D. Excessive drill string torque
Correct Answer: 🔴 B. Dropped-object and roll-over incidents
Explanation: 🔹 Improperly secured drill pipe can roll or collapse, causing serious
crushing injuries and dropped-object incidents. Static electricity and mud contamination
are unrelated to pipe stacking conditions. Torque problems occur during drilling
operations, not pipe storage.
BANK QUESTIONS AND ANSWERS | VERIFIED SOLUTIONS | UPDATED 2026/2027
STUDY GUIDE
Examiner/Administrator: Texas Railroad Commission (RRC) / Petroleum Extension
Service (PETEX) Industry Standards Alignment
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
TEXAS DRILLING OPERATIONS CERTIFICATION EXAM
2026/2027 EDITION
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
COMPLETE PRACTICE EXAM
100 MULTIPLE-CHOICE QUESTIONS
EXACT OFFICIAL COUNT: 100 QUESTIONS
PASSING SCORE: 70%
TESTING TIME: 120 MINUTES
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
TEXAS DRILLING OPERATIONS & WELL CONTROL STANDARDS || ALIGNED WITH
CURRENT OIL & GAS INDUSTRY BLUEPRINTS || DRILLING RIG OPERATIONS || WELL
CONTROL & SAFETY COMPLIANCE || OSHA & RRC REGULATORY ALIGNMENT ||
PROFESSIONAL STUDY GUIDE || 100% VERIFIED EDUCATIONAL CONTENT ||
COMPREHENSIVE CERTIFICATION PREPARATION || PREPARED FOR DRILLING
PERSONNEL, FLOORHANDS, DERRICKHANDS, MOTORHANDS & RIG OPERATORS ||
PROFESSIONAL EXAMINATION USE ONLY
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Safety Regulations, Rig Safety & Operational Compliance
Q1. During a drilling operation in the Permian Basin, a floorhand notices hydraulic fluid
leaking near the rotary table while pipe handling operations are ongoing. What is the
MOST appropriate immediate action according to standard drilling safety protocols?
,A. Continue operations until the current stand is completed
B. Notify the driller and isolate the hazard before resuming work
C. Apply absorbent material after tripping operations conclude
D. Wash the fluid into the drainage trench to avoid slips
Correct Answer: 🔴 B. Notify the driller and isolate the hazard before resuming
work
Explanation: 🔹 Hydraulic leaks near active rig equipment create immediate slip, fire,
and pressure-related hazards. Industry safety standards require personnel to report the
issue, isolate affected equipment if necessary, and mitigate the hazard before operations
continue. Option A ignores immediate danger. Option C delays corrective action. Option
D violates environmental and safety regulations by improperly disposing contaminants.
Q2. A driller is conducting a Job Safety Analysis (JSA) before casing operations begin.
Which element is MOST critical to include in the JSA?
A. Estimated fuel consumption for the shift
B. Personnel vacation schedules
C. Identification of pinch points and suspended load hazards
D. Historical production rates from nearby wells
Correct Answer: 🔴 C. Identification of pinch points and suspended load hazards
Explanation: 🔹 A JSA focuses on identifying operational hazards associated with specific
tasks. During casing operations, suspended loads, pinch points, and struck-by hazards
are major risks. Fuel use and production history are unrelated to immediate task safety.
Vacation schedules have no operational safety relevance.
Q3. Which federal regulation primarily governs occupational safety requirements on
U.S. drilling rigs?
A. EPA Clean Water Act
B. OSHA drilling and general industry standards
C. SEC operational disclosures
D. Federal Aviation Regulations
,Correct Answer: 🔴 B. OSHA drilling and general industry standards
Explanation: 🔹 OSHA establishes workplace safety regulations covering hazard
communication, fall protection, PPE, lockout/tagout, and drilling-related operations. EPA
rules focus on environmental protection rather than worker safety oversight. SEC and
aviation regulations are unrelated to drilling rig safety management.
Q4. During rig-up operations, a crane operator loses visual contact with the signal
person. What should occur NEXT?
A. Continue movement slowly until visibility improves
B. Stop crane movement immediately until communication is restored
C. Sound the horn and proceed cautiously
D. Lower the load without instructions
Correct Answer: 🔴 B. Stop crane movement immediately until communication is
restored
Explanation: 🔹 Crane operations require uninterrupted communication between the
operator and signal person. Loss of communication creates severe struck-by and crushing
hazards. Continuing movement without guidance violates lifting safety protocols. The
safest response is immediate cessation of movement until coordination resumes.
Q5. A worker enters a mud tank compartment without atmospheric testing because
the task is expected to last only two minutes. Which statement BEST describes this
action?
A. Acceptable if another worker remains nearby
B. Acceptable for short-duration tasks
C. Unsafe because confined-space entry procedures were bypassed
D. Safe if respiratory protection is available
Correct Answer: 🔴 C. Unsafe because confined-space entry procedures were
bypassed
, Explanation: 🔹 Confined-space regulations apply regardless of entry duration.
Atmospheric testing, ventilation, permits, and standby procedures are essential because
hazardous gases or oxygen-deficient conditions may exist unexpectedly. Time duration
does not eliminate confined-space risks.
Q6. Which piece of personal protective equipment is MOST essential when handling
drilling chemicals containing caustic additives?
A. Welding shield
B. Arc-flash blanket
C. Chemical-resistant gloves and splash protection
D. Hearing protection only
Correct Answer: 🔴 C. Chemical-resistant gloves and splash protection
Explanation: 🔹 Caustic drilling additives can cause severe skin and eye injuries. Proper
PPE includes chemical-resistant gloves, goggles, and face shields where splashing may
occur. Welding and electrical PPE are unrelated to chemical handling hazards. Hearing
protection alone is insufficient.
Q7. A derrickhand observes unstable stacking of drill pipe on the pipe rack. What
hazard is MOST likely?
A. Static electricity buildup
B. Dropped-object and roll-over incidents
C. Mud contamination
D. Excessive drill string torque
Correct Answer: 🔴 B. Dropped-object and roll-over incidents
Explanation: 🔹 Improperly secured drill pipe can roll or collapse, causing serious
crushing injuries and dropped-object incidents. Static electricity and mud contamination
are unrelated to pipe stacking conditions. Torque problems occur during drilling
operations, not pipe storage.
