Anchoring Core Operating Condition Parameters Before Selection Many oilfield procurement teams tend to focus solely on the nominal pressure when selecting acidizing operation hoses, neglecting the complex operating conditions in actual construction, ultimately leading to premature hose failure. The first step in scientific selection is to clearly define the core operating parameters: First, confirm the specific composition and concentration of the acidizing medium. Different types of acids require vastly different inner rubber materials; ordinary oil-resistant hoses are completely unsuitable for transporting highly corrosive acidizing media. Second, clarify the maximum operating pressure and instantaneous peak pressure, reserving sufficient safety margin for burst pressure to avoid pressure pulsation impacts that could damage the hose structure. Simultaneously, confirm the temperature range of the operating environment. Some ultra-deep wells have extremely high bottom-hole temperatures; ordinary rubber materials will rapidly harden and crack under high temperatures, necessitating the selection of products with special synthetic rubber formulations that meet temperature resistance standards. Structural Details Determine Long-Term Reliability When selecting acidizing operation hoses, it's crucial not only to look at the nominal parameters but also to carefully examine several easily overlooked structural details. First, check the thickness and uniformity of the inner rubber layer. This layer is the first line of defense against acid corrosion; insufficient thickness or uneven distribution will lead to rapid corrosion penetration in certain areas. Second, confirm the steel wire winding process of the reinforcing layer. High-quality products use a multi-layered, cross-wound steel wire arrangement to ensure even stress distribution under pressure, preventing localized stress concentration. Finally, check the wear resistance and aging resistance of the outer rubber layer. In complex field environments, if the outer rubber layer lacks ozone, UV, and oil resistance, prolonged outdoor exposure will cause rapid cracking and aging, significantly shortening its service life. In addition, the joint structure at the connection end is crucial. Standard flange joints with a double-sealing conical surface design significantly improve sealing contact pressure, maintaining zero leakage even after hundreds of disassembly and reassembly cycles under long-term scouring of sand-containing media. Compliant Materials for Special Operating Scenarios For different specific acidizing scenarios, acidizing hoses made of corresponding materials should be selected. For acidizing operations involving the transport of conventional dilute acids, cost-effective special acid-resistant synthetic rubber is sufficient. However, for extreme corrosive conditions involving concentrated strong acids and strong oxidants, high-end products lined with fluororubber are essential to resist the erosion of highly corrosive media. If the operation involves high concentrations of hydrogen sulfide gas, specially modified sulfur-resistant hoses must be selected to prevent stress corrosion cracking caused by sulfide penetration. For well sites requiring frequent relocation and repeated pipeline laying, dual-purpose (suction and discharge) acidizing hoses with spiral steel wire support structures are a preferred choice. These hoses prevent pipe wall flattening and collapse even under negative pressure suction conditions, making them suitable for special operations such as tanker loading and unloading and negative pressure feeding before pumps. Standardized Operation and Maintenance Extends Product Lifecycle Selecting the right acidizing hoses and implementing scientific operation and maintenance management can further extend their service life. During routine storage, place the hoses in a cool, well-ventilated warehouse, avoiding direct sunlight and immersion in rain or snow. Keep them away from sharp objects and corrosive chemicals. Do not pile heavy objects on top of the hoses, as this can cause them to deform under prolonged pressure. When laying pipelines on-site, avoid bends smaller than the specified minimum bending radius. Do not drag the hoses directly on gravel surfaces; if necessary, place protective pads under the hoses to reduce wear. After each operation, promptly flush the inner cavity of the hoses with clean water to remove any residual acid and prevent long-term corrosion of the inner rubber layer. Regularly inspect the hoses for appearance and pressure. If any cracks, bulges, or leaks are found in the outer rubber layer, immediately stop using the hoses to prevent accidents caused by operating with faulty components.