Nine Energy Service, Inc. operates as an onshore completion services provider that targets unconventional oil and gas resource development in North American basins and internationally. The company offers cementing services, including blending high-grade cement and water with various solid and liquid additives to create a cement slurry that is pumped between the casing and the wellbore of the well. It also provides open hole and cemented completion tool products, such as liner hangers and accessories, fracture isolation packers, frac sleeves, stage one prep tools, casing flotation tools, specialty open hole float equipment, disk subs, composite cement retainers, and centralizers that provide pinpoint frac sleeve system technologies. In addition, the company offers wireline services consisting of plug-and-perf completions, which is a multistage well completion technique for cased-hole wells that consists of deploying perforating guns and isolation tools to a specified depth; and coiled tubing services, which perform wellbore intervention operations utilizing a continuous steel pipe that is transported to the wellsite wound on a large spool. The company was formerly known as NSC-Tripoint, Inc. and changed its name to Nine Energy Service, Inc. in October 2011. Nine Energy Service, Inc. was incorporated in 2011 and is headquartered in Houston, Texas. On February 1, 2026, Nine Energy Service, Inc., along with its affiliates, filed a voluntary petition for reorganization under Chapter 11 in the U.S. Bankruptcy Court for the Southern District of Texas.