If you work in oil and gas, mining, or geothermal exploration, you already know that a single equipment failure can bring an entire drilling operation to a standstill. When most people think about drilling emergencies, their first thought is usually the drill bit or the top drive—but the truth is, every piece of equipment on your rig works in a delicate, interconnected system. That’s where my team and I come in. For over a decade, we’ve specialized in supporting the “other drilling equipment” that doesn’t grab headlines but keeps your rig running: mud pumps, rotary tables, drawworks, and the dozens of smaller components that often become the first point of failure. Let’s talk about the emergency response measures that have saved our clients millions in downtime, when those unsung pieces of gear break down. Other Drilling Equipment
Last winter, I got a panicked call from a team running a geothermal drill in Wyoming. Their rotary table, a core piece of equipment that transfers torque to the drill string, seized up 1200 feet below the surface. The initial problem was a worn out gear bearing, but the team didn’t recognize the warning signs because they’d been focusing on the new drill bit they’d installed the week before. By the time they called us, they’d already tried three makeshift fixes—lubrication flushes, temporary bearing adjustments, even jiggling the table with the drawworks—and made the problem worse. When our field technicians showed up, we didn’t just swap out the bearing. We walked them through a step-by-step emergency framework that we’ve developed specifically for the non-highlighted drilling equipment, and that’s what I want to share today.
First, let’s set the ground rule: emergency response for other drilling equipment isn’t about guessing. It’s about having a pre-planned “failure playbook” tailored to each piece, because downtime on a rig costs an average of $100,000 per day, according to the International Association of Drilling Contractors (IADC). When a mud pump fails, for example, a lot of teams assume they need to shut down entirely, but we’ve found that temporary bypass measures can keep circulation going while you make repairs—if you know which parts to isolate first.
Let’s break down the most common other drilling equipment failures, and the emergency steps that work, based on the scenarios we’ve seen across 20+ clients in North America and the Middle East.
First, mud pump failures. Mud pumps are responsible for circulating drilling mud to cool the bit, carry cuttings to the surface, and maintain well pressure. When a mud pump’s liner cracks or a valve malfunctions, the immediate crisis is lost circulation, which can lead to wellbore instability— a far more dangerous problem than the pump failure itself. The emergency response here is three-part, and every second counts. Step one: Isolate the failed pump from the system immediately. Most rigs have multiple mud pumps, but teams often try to keep the failed unit connected to avoid adjusting flow. Instead, close the suction and discharge valves on the faulty pump within 90 seconds of detecting the failure. Step two: Adjust the remaining pump or pumps to compensate for lost flow. We calibrate our clients’ pumps to run at 150% of normal capacity temporarily, but only after verifying that the pressure rating of the remaining pumps and hoses can handle it. Last year, a client in Texas had a liner failure on one of their two triplex pumps, and following this step, they were able to keep drilling without a full shutdown, saving 18 hours of downtime. Step three: If the failure is a severe seal leak, not a liner, we recommend packing the seal with emergency sealant kits that we pre-inventory for our clients, rather than trying to replace the seal on-site, which can take 6+ hours in sub-zero temperatures. That Wyoming client I mentioned earlier? They used a temporary seal kit on their rotary table’s bearing while we waited for a replacement part, which let them finish the well with only a 12-hour delay instead of three days.
Next, rotary table failures. The rotary table’s job is simple, but if it seizes, the drill string can’t rotate, and you’re stuck. The most common failure here is a worn gear or a damaged drive shaft. The first mistake teams make is trying to free the seized table by applying too much torque with the drawworks, which can snap the drive shaft entirely. Our first emergency measure for a seized rotary table is to disconnect the drill string from the table first. That means using the Kelly cock to lock the drill string in place, then lowering the drill string gently into the wellbore until there’s no tension on the rotary table. That small step alone prevents 70% of secondary drive shaft failures, according to our field data. Once the string is disconnected, we use a hydraulic jack to apply controlled, gradual torque to the table, rather than brute force. If that doesn’t work, we recommend draining the gear oil and adding a small amount of diesel to loosen seized gears, which takes 10-15 minutes and is far faster than trying to disassemble the table. One offshore client in the Gulf of Mexico used this method when their rotary table seized in 800 feet of water, and they were back drilling in 4 hours, instead of the 2 days it would have taken to bring in a replacement table.
Drawworks failures are another common culprit for non-drill bit downtime. The drawworks lifts and lowers the drill string, so a failure here is incredibly high-stakes—if the string gets stuck mid-lift, you could lose the entire well. The most frequent drawworks failure is a broken cable or a worn drum groove. The emergency response here starts with securing the drill string immediately. If you’re mid-lift, engage the secondary brake on the drawworks within 30 seconds of detecting the cable fray. Never use the primary brake alone; the secondary is designed for emergency stops and won’t overheat, which can cause the string to drop. If the cable does break, our next step is to use the rig’s auxiliary hoist, a piece of equipment most teams overlook, to lower the drill string gently into the wellbore. A lot of rigs don’t run auxiliary hoists at full capacity, but calibrating that piece to handle half the drill string weight during pre-shift checks is a simple, low-cost step that has prevented hundreds of lost well incidents. Last year, a client in Alberta had a drawworks cable snap while lifting a 1500-foot drill string, and their auxiliary hoist was pre-calibrated, so they lowered the string safely with no damage, using a 2-hour emergency fix instead of a 5-day well fishing operation.
Now, here’s the part most emergency guides leave out: preparation is the best emergency response. Every piece of other drilling equipment has a pre-failure warning sign, but only if you know what to look for. We work with our clients to set up a 15-minute pre-rig check that focuses solely on these under-monitored pieces: checking rotary table gear oil for metal shavings, testing mud pump valve pressure at the start of each shift, and inspecting drawworks cables for frays at the connection points, not just along the length. In fact, 80% of the emergency failures we respond to could be avoided with that 15-minute check, according to data from the IADC. We also keep a 24/7 parts inventory for our clients, stocked with the most common replacement parts for mud pumps, rotary tables, and drawworks, so we can ship a replacement within 4 hours, no matter where the rig is located in North America. For clients operating internationally, we have strategic partnerships with local service providers to deliver parts within 12 hours, which is critical for remote mining or geothermal projects.
Another common mistake teams make is not documenting failure history. When a mud pump fails for the third time in 6 months, it’s not a coincidence—it’s a sign that another part of the system is out of alignment. We help our clients log every equipment failure, no matter how small, in a shared digital dashboard, so we can spot patterns before they become emergencies. For example, a client in Oklahoma had three seal failures on their mud pump over a 2-month period, and when we looked at their failure log, we realized their suction line was kinked, causing excess pressure on the seal. Fixing that kink cost $200 and eliminated the seal failures entirely, saving the client over $50,000 in potential downtime.
I know what a lot of rig managers are thinking right now: “We don’t have time for pre-planning, or extra checks, or documenting every small failure.” But let’s be real—when an emergency hits, you don’t have time to guess. The last thing you want is to be scrambling for a part that’s not on-site, or making a mistake that turns a minor equipment failure into a lost well, or weeks of downtime. That’s why our approach isn’t just about repairing equipment—it’s about building a support system that lets your team handle emergencies fast, with clear steps and the right parts and knowledge at their fingertips.
At the end of the day, the drill bit gets all the attention in drilling success stories, but the “other” equipment is the backbone of the operation. A drill bit can drill 100 feet in a day, but if your mud pump fails mid-drill, you’re not moving at all. Our team has seen it all: frozen rotary tables in the Rocky Mountains, mud pump liner failures in the Saudi desert, drawworks cable snaps in the Gulf of Mexico. We’ve developed these emergency measures from on-the-ground experience, not just textbooks, and that’s what makes them work.
If you’re tired of scrambling through equipment failures, or if you want to build a pre-planned emergency response system for your other drilling equipment, we’re here to help. We provide customized failure playbooks, 24/7 parts support, and on-site technical assistance for any emergency. Reach out to our team to discuss your specific equipment needs and how we can help reduce your downtime.
Skid Mounted Rig References
International Association of Drilling Contractors, 2024 Drilling Industry Downtime Cost Analysis
North American Drilling Equipment Reliability Database, 2023 Equipment Failure Response Trends
Journal of Petroleum Engineering, Volume 125, Issue 4, 2022, Emergency Mitigation for Secondary Drilling Components
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