How to Prevent Issues When Using HDD Reamer

Hole Wall Collapse: A Hidden Danger of Underground "Collapse"

Hole wall collapse is one of the most common problems in reaming construction, mostly occurring in loose sandy soil, water-rich formations, or soft-hard interbedded areas. The main causes include: unreasonable mud ratio, which cannot form an effective wall protection; excessive reaming speed, which destroys the original stress balance of the formation; and insufficient geological survey, resulting in inadequate prediction of complex formations. DrillMore's special wall protection mud additives can enhance the toughness of the mud cake and effectively prevent collapse. Our water drilling machines and borehole drilling machines are also designed to adapt to such complex formations.

Preventive Measures:

1. Optimize the mud system, adjust viscosity, specific gravity, and water loss according to formation characteristics to ensure that the mud can form a tough mud cake on the hole wall;

2. Control the reaming rhythm, adopt a graded reaming method in soft soil formations, with each stage of reaming diameter increasing by no more than 100mm;

3. Strengthen geological survey, clarify the formation interface through advanced geological drilling, and inject curing agents in advance to improve the soil in high-risk areas.

DrillMore provides customized mud ratio schemes, suitable for different formations. We also offer well drilling machines and water well drilling rigs for various geological exploration needs.

Reamer Sticking: Troubles of Underground "Stumbling Blocks"

Reamer sticking is mostly caused by obstacles in the hole or out-of-control reaming parameters. Common causes include: residual cuttings in the hole not being discharged in time, forming a "cuttings bed"; mismatched reamer selection with the formation, such as using ordinary scraper reamers in hard rock; and sudden changes in the drilling trajectory, causing the reamer to get stuck with the hole wall. DrillMore's series of reamers, including roller reamers, rotary rock reamers, and hole openers, are designed for different formations to reduce the risk of sticking. Our hammer drills and impact drills can also assist in handling special situations.

Preventive Measures:

1. Select reamers reasonably, use roller reamers for hard rock formations, and blade reamers for soft soil formations;

2. Strengthen hole cleaning, timely discharge cuttings through high-pressure mud circulation, and conduct regular hole detection;

3. Optimize the drilling trajectory, avoid sharp bends and sudden slope changes, and ensure a smooth reaming path.

DrillMore provides high-pressure mud circulation equipment to efficiently clean cuttings in the hole. Our drill bit sets, including drill bit set all in, are of high quality to ensure drilling efficiency.

Insufficient Hole Diameter: A "Stumbling Block" for Pipeline Pullback

Insufficient hole diameter will lead to excessive resistance during pipeline pullback and even cause pipeline deformation. The main reasons include: insufficient reaming stages, excessive diameter increase in a single reaming stage; severe wear of the reamer without timely replacement; insufficient mud displacement, which cannot effectively carry cuttings, resulting in hole silting. DrillMore provides wear-resistant reamers, including HDD hole openers, horizontal directional drill reamers, HDD hole reamers, and HDD reamers, to extend service life and ensure the hole diameter meets standards. Our auger drilling machines and earth augers are also suitable for related auxiliary operations.

Preventive Measures:

1. Adopt multi-stage reaming, with each stage of reaming diameter being 1.2-1.5 times that of the previous stage;

2. Regularly inspect the reamer, and replace it in time when blade wear or damage is found;

3. Ensure mud displacement, adjust mud pump parameters according to reaming diameter and formation characteristics to ensure no silting in the hole.

DrillMore's reamer mud pumps have stable performance and meet different displacement requirements. We also offer a variety of openers, tool sets, and tools to meet all your construction needs.