Completion Rentals

Rental strings for completion and stimulation

Completion is the phase that turns a drilled hole into a producing well: running production tubing, setting packers, perforating, and stimulating the reservoir. Stimulation — most commonly hydraulic fracturing — pumps fluid and proppant at high rate and high pressure, which puts the workstring and surface tools under loads a drilling string never sees. Drillstrings rents the tubulars and tools these operations need, inspected and certified, so you can assemble a completion string sized and rated to the job without buying pipe you will use for a few weeks.

The tools a completion program needs

• Workstring tubing carries fluid to and from the reservoir and takes the internal pressure of stimulation. We stock high-strength grades such as P-110 for frac and stimulation duty.
• Handling tools — elevators, slips, tongs and stabbing guides — let the crew run and pull tubing safely and make up premium connections to the correct torque.
• Pressure control equipment rated for completion pressures provides the barriers required while the well is live during and after stimulation.
• Downhole tools and BHA components round out the string with crossovers, subs and the fittings a completion assembly requires.

Why connections and pressure ratings matter

A completion string is often gas-bearing and always pressure-cycled, so the connection is the critical detail. Premium gas-tight connections seal on metal-to-metal shoulders rather than relying on thread compound, which is why we supply them for completion and stimulation work rather than standard tool joints. Grade selection follows the same logic: P-110 and comparable high-strength tubing give the wall strength and yield needed to hold frac pressure with margin. Getting the combination of grade, wall and connection right is exactly the reasoning covered in our guide to how to select drilling tubulars and the broader well-control barriers guide, since a live completion depends on verified barriers.

Sizing a stimulation workstring

A frac or stimulation workstring is sized around three limits: burst (internal pressure), tension (hanging weight plus any overpull), and the connection’s pressure and torque rating. High-strength grades such as P-110 give the wall and yield to hold treating pressure with margin, but the string is only as strong as its weakest connection, which is why premium gas-tight connections rather than standard tool joints are the norm. When treating pressures approach the string’s rating, a heavier wall or higher grade — rather than accepting a thin safety factor — is the right call. Our guide to how to select drilling tubulars works through the same burst, collapse and tension reasoning.

Barriers on a live completion

Perforating, setting packers and stimulating are performed with the well live or about to be, so the two-barrier philosophy governs the work: at all times two tested, independent barriers stand between formation pressure and the environment. The workstring, its connections, and the surface pressure-control equipment all participate in that barrier envelope, which is why each is pressure-tested and certified. See well-control barriers for the full philosophy.

Common pitfalls

• Under-rating the string to save on rental — treating pressure spikes exceed a thin margin and part the string.
• Mixing connection types so a premium gas-tight seal is compromised by a standard crossover.
• Skipping the pressure test — an unverified rating is an assumption, not a barrier.
• Wrong grade for sour service — an H2S zone can require controlled-yield, NACE-compliant tubing even where a higher plain grade would otherwise be chosen.

Inspected, tested and delivered for sour service

Every tubing and workstring we rent is inspected to DS-1 / API RP 7G-2 categories, serialized for traceability, hydrostatically pressure-tested and certified before dispatch. Where the reservoir is sour, we supply strings and tools in NACE MR0175–compliant material to resist sulfide stress cracking. Whether a single completion warrants renting or a multi-well pad justifies buying is worth weighing — our rent vs buy guide helps. From a single yard or across our network, we stage the string to your schedule. Give us your completion and stimulation parameters and we’ll quote a ready-to-run string.