Triangle Oilfield Services

Triangle Oilfield Services has various inspection services to offer and can be customized according to...

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Services > Tubular Inspection Services

Triangle Oilfield Services has various inspection techniques to offer and can be customized according to the Customer requirements. The inspection services range from the basic visual inspection to EMI, MPI and UT inspection and API Thread Gauging.

Triangle Oilfield Services covers from the basic tubular inspection to the more critical inspection areas. Our area of expertise is Tubular Inspection and we stand for Quality and Reliability. All inspection services are provided as per latest API Specifications and DS 1 Cat 1 - 4 Specifications and also meeting the customer specifications.

We have a highly experienced Panel of Inspectors who can be deputed within a short time for the Inspection of the Tubulars. Our strength is our experienced, qualified, reliable and effective manpower resource. We employ equipment that is portable and reliable.

Tubular Inspection includes inspection of New and Used Oil Country Tubular Goods covering
Drill Pipes, Heavy Weight Drill Pipes, Drill Collars, Casing, Tubing and Bottom Hole Assembly.

Inspection Services in offer are :

Visual Pipe Inspection
Dimensional Inspection of Pipe
Ultrasonic (UT) wall thickness inspection
Ultrasonic (UT) Inspection of Upsets and three feet end area
EMI Inspection by Spectograph 2000
EMI Inspection for Function
Visual Thread Inspection
Tool Joint Dimensional Inspection
Dimensional Inspection of Rotary Shoulder
Magnetic Particle Inspection (MPI) of Pipe Body and Upsets
Wet fluorescent magnetic particle (black light) inspection
Dye Penetrant Testing
API Full Length Drifting
Hardness Testing
Thread Gauging

We believe that having the best inspection system available, is in itself, not the sole criteria in obtaining a Quality Inspection of the Tubulars. We believe that the inspection system is only an extension of the person who is conducting and who is ultimately responsible for the quality of the inspection. Our strength is the experienced Panel of Inspectors who have many years of practical experience on Tubular Inspection and who are conversant with the latest product specifications and have the knowledge to meet the ever changing needs of the customer's specifications. Quality is of paramount importance in every activity at Triangle Oilfield Services. We are committed to offer the best quality services to our customers.

We have the best, most knowledgeable staff anywhere. Our mission is to achieve and maintain the highest level of customer confidence and satisfaction.

Tubular Inspection	Pipe Maintenance Services
Drill Pipe	Cleaning/ OD Sand Blasting
Heavy Weight Drill Pipe	Straightening
Drill Collars	Rust Preventive Coating
Casing	Refacing of Tool Joints
Tubing	Handling and storage of Tubulars
Bottom Hole Assembly

Drill Pipe Inspection Services
Visual Tube Body Inspection	A thorough visual inspection of pipe external surface for possible noticeable damages, such as dents, mashes and corrosion/ pits, shall be performed from upset to upset. Visual inspection includes internal end area of each tube for service induced defects. The tubes are checked for straightness.
Visual Thread Inspection	Thread Protectors are removed and both pin and box ends are thoroughly cleaned and visually evaluated for any obvious defects or mechanical damages, such as dents, corrosion, galled threads, etc. Thread profile gages are used to estimate the visible gaps at any of the flanks or thread roots. API Dope is applied to the threads and thread protectors are installed. The dope shall be supplied by the customer.
OD Gauge (Full Length)	Full length mechanical measurement of outside diameter is performed for identification of external wear, dents, mashes, slip area and stress induced diameter variations.
Magnetic Particle Inspection (MPI)	Pipe is magnetized with a DC magnetizing coil with variable current to provide active longitudinal magnetization for detection of transverse flaws.
Electromagnetic Inspection (EMI)	Buggy Inspection Unit is used for transverse defect inspection.
Ultrasonic Inspection (UT)	Ultrasonic examination of upset areas for the detection of transverse and three dimensional flaws on the inside and outside surface of the tube is performed. The critical area is also covered.
Hardness Testing	Portable Hardness Testers are utilized to perform hardness reading on the pipe.
Wall Thickness Measurements	Ultrasonic Measurement: Ultrasonic wall thickness tests are utilized to determine the minimum and maximum wall thickness at any one area on a tube. A test consists of taking as many circumferential measurements as required to determine the minimum and maximum wall thickness in one area. Micrometer Measurement: Micrometer measurements are utilized in measuring the wall thickness on the ends of plain end pipe. Ultrasonic Wall Verification: Ultrasonic wall thickness test to verify that the tube body, in general, satisfies nominal wall thickness requirements.
Tool Joints & Upsets Inspection	Transverse external magnetic particle inspection (excluding threads) is performed to detect external fatigue cracks and pits.

Associated Tool Joint Inspections
Critical Area Inspection	Upsets and 24 inches of pipe body are internally inspected with magnetic particle to detect internal transverse fatigue cracks.
Tool Joint OD Measurement	The Tool Joint OD is callipered to API RP 7G or customer specification to identify undersized (worn) tool joints.
Shoulder (Face) Examination	Tool Joint faces are visually examined for defects affecting pressure holding capacity for galls, nicks, washes and fins.
Tool Joint Marking Check	Tool Joints are checked for manufacturer’s markings.
Shoulder Width Measurement	A mechanical gauge is used to measure the width of tool joint shoulders and to detect non-uniform wear resulting from crooked drill pipe.
Box Swell Measurement	Inside diameter of box counter bore is mechanically measured to detect dimensional change resulting from excessive torque.
Thread Profile (Pin Stretch Examination)	The connections are mechanically gauged using taper, lead and height gages to detect galled or stretched threads, flank wear and sharp crowns.
Magnetic Particle Inspection Box & Pin Threads	Box and Pin threads are cleaned and inspected by either magnetic particle or black light to detect transverse cracks in thread roots.
Refacing	Seals found to be damaged or corroded are refaced to the limitation of API RP 7 G.

Drill Pipe Maintenance Services
Cleaning/ OD Sand Blasting	Sand Blasting of otside surface of the pipe, wire brushing and rattling to remove rust, scale and other debris.
Cement Removal	Internal cleaning with reamers to remove cement residual and other solidified material in the ID of the pipe.
Straightening	Bent pipe is straightened using a ram type hydraulic press.
Coating	A rust preventive coating is applied to maintain the integrity of the drill pipe.

TH Hill DS 1 Inspection Services >>
If the customer requires DS-1 inspection, Triangle Oilsfield Services can perform the inspection accordingly.

Heavy Weight Drill Pipe
Visual Tube Body Inspection	A thorough visual inspection of pipe external surface for possible noticeable damages, such as dents, mashes and corrosion/ pits, shall be performed from end to end. Visual inspection includes internal end area of each tube for service induced defects. The tubes are checked for straightness.
Visual Thread Inspection	Thread Protectors are removed and both pin and box ends are thoroughly cleaned and visually evaluated for any obvious defects or mechanical damages, such as dents, corrosion, galled threads, etc. Thread profile gages are used to estimate the visible gaps at any of the flanks or thread roots. API Dope is applied to the threads and thread protectors are installed. The dope shall be supplied by the customer.
OD Gauge (Full Length)	Full length mechanical measurement of outside diameter is performed for identification of external wear, dents, mashes, slip area and stress induced diameter variations.
Magnetic Particle Inspection (MPI)	Pipe is magnetized with a DC magnetizing coil with variable current to provide active longitudinal magnetization for detection of transverse flaws.
Wall Thickness Measurements	Ultrasonic Measurement: Ultrasonic wall thickness tests are utilized to determine the minimum and maximum wall thickness at any one area on a tube. A test consists of taking as many circumferential measurements as required to determine the minimum and maximum wall thickness in one area. Micrometer Measurement: Micrometer measurements are utilized in measuring the wall thickness on the ends of plain end pipe. Ultrasonic Wall Verification: Ultrasonic wall thickness test to verify that the tube body, in general, satisfies nominal wall thickness requirements.
Thread Gauging	The connections are mechanically gauged using taper, lead and height gages to detect galled or stretched threads, flank wear and sharp crowns and to verify the connection is within API Specifications.
Magnetic Particle Inspection Box & Pin Threads	Box and Pin threads are cleaned and inspected by either magnetic particle or black light to detect transverse cracks in thread roots.
Refacing	Seals found to be damaged or corroded are refaced to the limitation of API RP 7 G.

Heavy Weight Drill Pipe & Drill Collar Maintenance Services
Cleaning	Wire brushing or rattling to remove rust, scale and other debris.
Straightening	Bent pipe is straightened using a ram type hydraulic press.
Coating	A rust preventive coating is applied to maintain the integrity of the drill pipe.

TH Hill DS 1 Inspection Services
If the customer requires DS-1 inspection, Triangle Oilfield Services Inspection & Services can perform the inspection accordingly.

Drill Collar Inspection Services
Visual Tube Body Inspection	A thorough visual inspection of pipe external surface for possible noticeable damages, such as dents, mashes and corrosion/ pits, shall be performed from end to end. Visual inspection includes internal end area of each tube for service induced defects. The tubes are checked for straightness.
Visual Thread Inspection	Thread Protectors are removed and both pin and box ends are thoroughly cleaned and visually evaluated for any obvious defects or mechanical damages, such as dents, corrosion, galled threads, etc. Thread profile gages are used to estimate the visible gaps at any of the flanks or thread roots. API Dope is applied to the threads and thread protectors are installed. The dope shall be supplied by the customer.
OD Gauge (Full Length)	Full length mechanical measurement of outside diameter is performed for identification of external wear, dents, mashes, slip area and stress induced diameter variations.
Magnetic Particle Inspection (MPI)	Pipe is magnetized with a DC magnetizing coil with variable current to provide active longitudinal magnetization for detection of transverse flaws.
Wall Thickness Measurements	Ultrasonic Measurement: Ultrasonic wall thickness tests are utilized to determine the minimum and maximum wall thickness at any one area on a tube. A test consists of taking as many circumferential measurements as required to determine the minimum and maximum wall thickness in one area. Micrometer Measurement: Micrometer measurements are utilized in measuring the wall thickness on the ends of plain end pipe. Ultrasonic Wall Verification: Ultrasonic wall thickness test to verify that the tube body, in general, satisfies nominal wall thickness requirements.
Thread Gauging	The connections are mechanically gauged using taper, lead and height gages to detect galled or stretched threads, flank wear and sharp crowns and to verify the connection is within API Specifications.
Magnetic Particle Inspection Box & Pin Threads	Box and Pin threads are cleaned and inspected by either magnetic particle or black light to detect transverse cracks in thread roots.
Refacing	Seals found to be damaged or corroded are refaced to the limitation of API RP 7 G.

Heavy Weight Drill Pipe & Drill Collar Maintenance Services
Cleaning	Wire brushing or rattling to remove rust, scale and other debris.
Straightening	Bent pipe is straightened using a ram type hydraulic press.
Coating	A rust preventive coating is applied to maintain the integrity of the drill pipe.

TH Hill DS 1 Inspection Services
If the customer requires DS-1 inspection, Triangle Oilfield Services Inspection & Services can perform the inspection accordingly.

Casing Inspection Services
Visual Tube Body Inspection	A thorough visual inspection of possible noticeable external damages inflicted is performed; most damages encountered arise from handling of the casing, such as major dents and mashes. Other types of flags will be external corrosion, laps, and straightness.
Visual Thread Inspection (API & Premium Connections)	Thread Protectors are removed and both pin and box ends are thoroughly cleaned and visually evaluated for any obvious defects or mechanical damages, such as dents, corrosion, galled threads, etc. Premium threads are inspected to evaluate the condition of the seals, threads and for any mechanical damages like dents, corrosion, galled threads, etc. API Dope is applied to the threads and thread protectors are installed. The dope shall be supplied by the customer.
API Drifting (Full Length)	Drift mandrels conforming to API Specifications are passed through the full length of each tube to assure compliance with API internal diameter specifications. If a mashed or dented area prevents drift, the location is noted on the inspection report and marked physically on the pipe.
Special Clearance Drift – Full Length	Special clearance drift mandrels, furnished by the customer, are passed through the full length of each tube to determine special clearances on the internal diameter. This is not an API inspection and is usually performed to assure passage of special tools or oversize bits.
Magnetic Particle Inspection (MPI)	Pipe is magnetized with a DC magnetizing coil with variable current to provide active longitudinal magnetization for detection of transverse flaws.
Electromagnetic Inspection (EMI)	Buggy Inspection Unit is used for transverse defect inspection.
Hardness Testing	Portable Hardness Testers are utilized to perform hardness reading on the pipe.
Wall Thickness Measurements	Ultrasonic Measurement: Ultrasonic wall thickness tests are utilized to determine the minimum and maximum wall thickness at any one area on a tube. A test consists of taking as many circumferential measurements as required to determine the minimum and maximum wall thickness in one area. Micrometer Measurement: Micrometer measurements are utilized in measuring the wall thickness on the ends of plain end pipe. Ultrasonic Wall Verification: Ultrasonic wall thickness test to verify that the tube body, in general, satisfies nominal wall thickness requirements.
API Thread Gauging	API eight round and buttress threads are gauged with mechanical instruments to determine compliance on taper, lead and height. At the same time, the threads are examined for visual defects.

Casing Pipe Maintenance Services
Cleaning	Wire brushing or rattling to remove rust, scale and other debris.
Straightening	Bent pipe is straightened using a ram type hydraulic press.
Coating	A rust preventive coating is applied to maintain the integrity of the casing.

Tubing Inspection Services
Visual Tube Body Inspection	A thorough visual inspection of possible noticeable external damages inflicted is performed; most damages encountered arise from handling of the tubing, such as major dents and mashes. Other types of flags will be external corrosion, laps, and straightness. Visual Inspection includes internal end area of each tube end for service induced defects.
Visual Thread Inspection (API & Premium Connections)	Thread Protectors are removed and both pin and box ends are thoroughly cleaned and visually evaluated for any obvious defects or mechanical damages, such as dents, corrosion, galled threads, etc. Premium threads are inspected to evaluate the condition of the seals, threads and for any mechanical damages like dents, corrosion, galled threads, etc. API Dope is applied to the threads and thread protectors are installed. The dope shall be supplied by the customer.
API Drifting (Full Length)	Drift mandrels conforming to API Specifications are passed through the full length of each tube to assure compliance with API internal diameter specifications. If a mashed or dented area prevents drift, the location is noted on the inspection report and marked physically on the pipe.
Special Clearance Drift – Full Length	Special clearance drift mandrels, furnished by the customer, are passed through the full length of each tube to determine special clearances on the internal diameter. This is not an API inspection and is usually performed to assure passage of special tools.
Magnetic Particle Inspection (MPI)	Pipe is magnetized with a DC magnetizing coil with variable current to provide active longitudinal magnetization for detection of transverse flaws.
Electromagnetic Inspection (EMI)	Buggy Inspection Unit is used for transverse defect inspection.
Hardness Testing	Portable Hardness Testers are utilized to perform hardness reading on the pipe.
Wall Thickness Measurements	Ultrasonic Measurement: Ultrasonic wall thickness tests are utilized to determine the minimum and maximum wall thickness at any one area on a tube. A test consists of taking as many circumferential measurements as required to determine the minimum and maximum wall thickness in one area. Micrometer Measurement: Micrometer measurements are utilized in measuring the wall thickness on the ends of plain end pipe. Ultrasonic Wall Verification: Ultrasonic wall thickness test to verify that the tube body, in general, satisfies nominal wall thickness requirements.
API Thread Gauging	API eight round and buttress threads are gauged with mechanical instruments to determine compliance on taper, lead and height. At the same time, the threads are examined for visual defects.

Tubing Pipe Maintenance Services
Cleaning	Wire brushing or rattling to remove rust, scale and other debris.
Straightening	Bent pipe is straightened using a ram type hydraulic press.
Coating	A rust preventive coating is applied to maintain the integrity of the casing.

Coupling Inspection Services
New casing and tubing couplings are magnetized and magnetic particle inspected for longitudinal defects and other flaws on the internal and external surface. Physical damage such as cuts or mashes are noted and reported to the customer.