What drilling rig is best for sand layers? Analysis of hot topics across the Internet and equipment recommendations
With the rapid development of infrastructure, mineral exploration and other fields, the demand for sand drilling is increasing. How to choose a drilling rig suitable for sand geology has become a hot topic recently. This article will analyze the technical difficulties of sand drilling based on the hot spots on the entire network in the past 10 days, and recommend suitable equipment and parameters.
1. Technical difficulties in drilling in sand layers
The sand layer is loose and prone to hole collapse, which requires high stability and slag discharge capabilities of the drilling rig. Here are the frequently asked questions:
| Question type | Specific performance |
|---|---|
| Hole wall collapse | Sand grains are highly mobile and prone to collapse after drilling. |
| Difficulty discharging slag | Drill cuttings and sand are mixed, affecting drilling efficiency |
| Equipment wear and tear | Sand grains intensify wear on drill bits and pipes |
2. Recommendation of drilling rig types suitable for sand layers
According to recent industry discussions and user feedback, the following three types of drilling rigs have outstanding performance:
| Rig type | Applicable scenarios | Advantages |
|---|---|---|
| Rotary drilling rig | Medium and shallow sand layer (depth <50m) | Fast hole formation and high stability |
| Reverse circulation drilling rig | Deep sand layer (depth>50m) | High slag discharge efficiency and not easy to block holes |
| Multi-process composite drilling rig | Complex sand layer (including gravel, etc.) | Strong adaptability, drilling mode can be switched |
3. Performance comparison of popular brands and models
Based on e-commerce platform sales and project case data, the following equipment is recommended:
| Brand/Model | Drilling depth | Aperture range | price range |
|---|---|---|---|
| Sany SR285R rotary drilling rig | 0-60m | 0.8-2.5m | 1.8-2.2 million yuan |
| XCMG XRS1050 reverse circulation drilling rig | 0-120m | 0.5-3.0m | 2.6-3 million yuan |
| Sunward Intelligent SWDM360 Multi-process Drilling Rig | 0-100m | 0.6-2.8m | 2 million to 2.5 million yuan |
4. Hot issues that users are concerned about
In the past 10 days, the following topics have been the most discussed on Zhihu, Tieba and other platforms:
| topic | heat index |
|---|---|
| How to prevent hole collapse when drilling in sand? | ★★★★☆ |
| Can a small drill rig be used in sand layers? | ★★★☆☆ |
| Drill bit material selection (alloy/diamond) | ★★★★★ |
5. Operation suggestions and precautions
1.Wall protection measures:It is recommended to use mud retaining or casing follow-up technology;
2.Drilling speed control:In the sand layer, it is recommended to control the rotation speed at 40-60rpm;
3.Regular maintenance:After each shift, the sand residue in the drill pipe needs to be cleaned.
In summary, sand drilling requires comprehensive consideration of geological conditions, cost budget and construction efficiency. Rotary drilling rigs and reverse circulation drilling rigs are the current mainstream choices in the market, while multi-process composite drilling rigs are becoming an emerging trend.
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