When drilling oil and gas wells, you need a blueprint to reduce risk and maximize cost efficiency across the board. Since 1992, Signa has engineered full-cycle solutions for all upstream work. We evaluate your prospect and design the best application based on your data, not friendships with service companies. Our engineers personally design your project, including conventional applications, Managed Pressure Drilling (MPD), UnderBalanced Drilling (UBD), MudCap Drilling, and Casing Drilling, as well as workover, production, and reservoir services, horizontal/multilateral drilling, and surface equipment design.
Drilling (Onshore & Offshore)
No matter how deep you plan to drill, you need step-by-step instructions to reduce onsite risks and stay within your AFE. Signa develops drilling programs specific to your location and downhole parameters, not by using a cookie-cutter template. All project phases can be addressed, including: permitting, pressure profiles, directional plans, fluid program, scheduling, costs, cement, and surface equipment layout. We’ve engineered drilling programs for hundreds of operators around the globe. Whether you’re drilling a shallow shale well or a deep horizontal into a sour formation, Signa provides a blueprint to get you safely and efficiently to TD. We handle complete project management, or engineer specific drilling programs and operational procedures for your program. If non-productive time has been an issue, we perform focused Problem Resolution services to get you back on track.
Third Party Review & Certification
With the current regulatory environment, it is essential to stay within the boundaries of drilling and completion laws. Signa’s registered professional engineers use StressCheck™ software to ensure your plans are compliant with current regulations. We can provide insight into your current casing design by recommending alterations for compliance and safety. All parameters are checked, including: burst, collapse, axial, triaxial, H2S, CO2, buckling, thermal effects, casing wear, and existing tubular issues. All designs are consistent with API Bulletin 5C3, ISO/TR 10400 and ISO13679 (now required by BOEMRE). If needed, Signa can develop a custom design using StressCheck™. If you're looking for peace of mind on location, we evaluate and certify cementing plans, plugging & abandonment plans, and perform competent rig inspections and safety audits.
Your casing profile is the conduit that connects your downhole investment to the surface. An improper design can lead to costly repairs, loss of hole, or HSE incidents. Signa's casing designs provide cost-effective solutions with high safety and integrity. Our registered professional engineers model your well using StressCheck™ software, with attention to burst, collapse, axial, triaxial, H2S, CO2, buckling, thermal effects, casing wear, and existing tubular issues. We ensure your well has the optimal number and length of casing strings, including expandable liners. All designs are consistent with API Bulletin 5C3, ISO/TR 10400 and ISO13679 (now required by BOEMRE). We engineer conventional casing designs or specialty designs like high temperature/high pressure (HTHP) and extended reach drilling (ERD) programs.
Extreme Hydraulics Design
When entering a formation with extreme downhole pressure profiles, you need a hydraulics design to get you safely to TD. Signa has engineered some of the world’s most technically challenging wellbores, including high-pressure, high-temperature (HTHP) wells, sour gas (H2S and CO2), and extremely depleted reservoirs. By utilizing our proprietary modeling softwares, we provide you with a snapshot of your downhole environment. Likewise, we engineer step-by-step instructions to navigate through treacherous downhole environments. Our designs determine the capacity of drilling equipment and circulating fluid to prevent nasty surprises while drilling and tripping. They predict adequate hole cleaning while minimizing torque, drag, and buckling. A competent design will allow you to achieve the maximum ROP while maintaining an adequate barrier to dangerous pressures and temperatures downhole.
Managed Pressure Drilling
MPD can help mitigate serious downhole problems like kick/loss scenarios, lost circulation, or extremely narrow pore pressure/frac gradient windows. Signa has designed some of the world’s most technically challenging MPD applications, including deepwater Gulf of Mexico, Russia, Algeria, the Caspian Sea, the North Sea, and MPD/Casing Drilling in South Texas. Signa also served as Project Manager for the world’s first MPD from a floating vessel in offshore Malaysia, and is currently leading the way into deepwater MPD in the U.S. GoM. We have engineered and executed all variations, including Constant Bottomhole Pressure (CBHP), Point of Constant Pressure (PoCP), Dual Gradient Drilling (DGD), and MudCap Drilling (pressurized MCD and Floating/Dynamic MCD). If you’re interested in how MPD can benefit your campaign, our engineers can explain all the details. Or we can design a MPD program specific to your well, including surface equipment diagrams, choke management plans, and flow rates. Using our experience with MPD variations, we can recommend your ideal application, including CBHP, PoCP, DGD, or MCD.
UBD frequency has decreased from a decade ago, but it’s still utilized around the globe to drill pressure-depleted formations and reduce formation damage. Signa is no stranger to the technique: In the 1980s, CEO Rick Stone helped develop UBD in the Pearsall Field of Texas. And then in the 1990s, Signa expanded the technique to pioneer MudCap Drilling in the sour-gas, cavernous formations of Kazakhstan, the Arabian Gulf, South America, and the Caspian Sea. If you would like to discover how UBD can benefit your campaign, our engineers can explain all the details. Or we can design a UBD program specific to your well, including surface equipment diagrams, choke management plans, flow rates, and fluid type (mud, oil-based fluids, aerated mud, foam, mist, air, etc.).
Horizontal / Directional Drilling / Extended Reach
Horizontal drilling can offer significant benefits over vertical wells, like increasing drainage area and connecting virgin fractures, but horizontal drilling is much more complex. Hook loads are influenced more by directional plan than by length of drillpipe. It’s also crucial to consider drag issues, torque, hydraulic issues, and buckling, all of which are limited by surface equipment. If you’re considering a directional project, we can explain the benefits – and risks – associated with the technique, and engineer a program specific to your downhole needs. Our step-by-step instructions include pressure profiles, directional plans, fluid program, scheduling, costs, cement, and surface equipment layout.
Premature setting of intermediate casing and drilling liners are a source of cost overruns for today’s drillers. Casing drilling allows you to drill and case the well simultaneously using standard oilfield casing that is permanently installed in the well. The technique can make drilling faster, safer and more cost efficient. It can also increase the depth at which casing is set, and perhaps eliminate one or more casing strings. Signa found this method very effective in South Texas to widen the window of pore pressure ranges in an open-hole section. Our engineers can explain the benefits to you, or provide a custom design for your program. Our step-by-step instructions include rig necessities, pressure profiles, directional plans, fluid program, scheduling, costs, cement, and surface equipment layout.
Coil Tubing Drilling
Coil tubing drilling (CTD) has found a niche when combined with underbalanced techniques, especially in Middle Eastern countries and Alaska, to unlock reserves in mature oilfields. Drilling times can be greatly reduced compared to conventional jointed-pipe drilling rigs. However, the method requires a great deal of planning and experience to execute properly and safely. Because the technique requires a built-for-purpose rig, it is imperative to understand all parameters, including directional departure, bits, BHAs, and fluid circulation. Signa has engineered CTD and overseen execution internationally by entering extremely low-pressured reservoirs, lengthening the wellbore, and increasing production. If you’re considering CTD, our engineers can walk you through the benefits it might hold for your reserves. We also engineer custom coil tubing drilling programs, including rig requirements, pressure profiles, directional plans, fluid programs, scheduling, vendors, and surface equipment layout.
Completions / Well Intervention / Workover
If you’ve spent millions drilling a well, the last thing you want to do is abandon focus once you reach TD. Maximizing product flow can be accomplished by using plans that are specific to your formation and wellbore. Signa’s completion procedures provide you step-by-step instructions and the ideal fracture stimulation technique to maximize production from your well. We have experience fracking in formations domestically and around the globe. Your completion can be modeled by a professional engineer, specific to your downhole limits and equipment capacity – not using some cookie-cutter template. Signa doesn’t sell or rent any equipment, so our recommendations aren’t based on marketing sales. Our only objective is maximizing your flow. We can design coil tubing plans for your operation.