How a Compact Small Water Well Drilling Rig Helped a UK Contractor Beat Narrow Access and Hard Rock
Private water supplies are everywhere in rural Britain — farms, estates, cottages and rural businesses beyond the mains network. But drilling a new well in the British countryside is rarely straightforward. Sites sit behind single-track lanes and 1.5-metre gateways, the pad is often soft pasture that must be left almost untouched, and the geology can switch from sticky clay to hard limestone within the first dozen metres.
That combination locks out most truck-mounted rigs. This case study shows how a UK contractor solved exactly that problem with a small crawler-class water well drilling rig package from YG Machinery — a compact, foldable 200 kg machine that two workers can carry where a lorry rig cannot go, yet which still drills DTH through hard rock.
Project Background: Hard Rock and Tight Access in the Cotswolds
The customer was a family-run groundworks and water well drilling contractor serving Gloucestershire and the Cotswolds Area of Outstanding Natural Beauty (AONB). Customer identity withheld for confidentiality.
The project was a new private water supply well for a large country estate — a typical rural UK drilling brief:
- A production well with 200 mm casing, targeting the Cotswold limestone aquifer at roughly 120–150 m depth.
- Geology comprising stiff clay and loam overburden over oolitic limestone, with hard bands in the f8–f12 range.
- Access via a single-track lane with a gateway less than 1.5 m wide and a weight-restricted stone bridge.
- Minimal ground disturbance — the pad sat on grazing land in a protected landscape that had to be fully restored afterward.
Priced with a conventional lorry-mounted rig, the job needed costly temporary trackway and crane mobilisation, making the quote uncompetitive. The alternative the contractor needed was simple: a small drilling rig that could reach the pad without machinery on the lane, handle both clay and rock, and leave the pasture as it found it.
Get the Parameters and Price of YG Small Water Well Drilling Rigs
The Solution: YG-240 Series Compact Water Well Drilling Rig
YG recommended the YG-240-30P, the higher-powered of the two portable models, supplied as a complete package with a DTH hammer, drill rods, mud circulation equipment, and a matched air compressor for rock drilling.
| Specification | YG-240-22P | YG-240-30P (recommended for this project) |
| Transport dimensions | 1,450 × 1,550 × 1,970 mm | 2,000 × 1,230 × 2,090 mm |
| Machine weight | ~200 kg | ~200 kg |
| Diesel engine power | 22 HP | 30 HP |
| Max. drilling depth | 200 m | 200 m |
| Drilling hole diameter | Within 280 mm | 100–240 mm |
| Drill rod | Ø42 mm × 1.5 m / unit | Ø51 mm × 1.5 m / unit |
| Rod change method | Full automatic screw thread | Full automatic screw thread |
| Lifting height | 2.5 m | Max. 2.5 m |
| Lifting force | 1,000 kg | 2,000 kg |
| Drilling methods | Mud rotary; DTH hammer with compressor package | Mud rotary; DTH hammer with compressor package |
Specifications per manufacturer data and may vary by production batch; final configuration subject to order confirmation.
Why the 30P suited this bore: the 200 mm casing sits comfortably inside its 100–240 mm drilling range, the 2,000 kg lifting force and 51 mm rods handle a 150 m string, and the 30 HP diesel runs the hydraulic power head and mud system without any mains power — useful on an estate pad with no electricity.
Practical features that mattered on this site:
- Modular and portable. Folds into modules carried in a pickup truck or small van; two workers can assemble the rig on site in about 30 minutes — no crane, no trackway.
- DTH and mud rotary on one rig. DTH hammer for the limestone, mud pump circulation for the clay overburden.
- Automatic rod handling. Full automatic screw-thread rod changes with 1.5 m rods keep the crew small and the cycle fast.
- Drilling aids. Real-time depth display and a verticality calibration system (verticality error ≤2%), one-button start with hydraulically assisted feed.
- Safety built in. Overload protection, emergency stop, and anti-jamming devices.
- Simple to run. The control layout is designed so an operator can work independently after roughly 1–2 hours of training.
“The YG-240-30P folds down to about 2.0 × 1.2 × 2.1 metres and weighs around 200 kg — two people can carry it to a pad that a truck rig physically cannot reach — yet it is rated to 200 m with 2,000 kg of lifting force. That size-to-capacity ratio is what makes it work for narrow-access boreholes.”
— YG Machinery engineering team
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Drilling Process and On-Site Performance
Access and setup. The rig arrived in the UK by sea freight in export crates. On mobilisation day, the crew loaded the folded modules, rods and tooling into a single 4×4 pickup, drove the single-track lane and parked short of the weight-restricted bridge. The modules were hand-carried the final 120 m through the 1.5 m gateway to the drill pad, and the rig was assembled and standing in roughly 30 minutes. No trackway was laid, no support crane was needed, and ground damage was limited to light van ruts on the existing lane — the pasture itself was untouched.
Overburden. The clay and loam section was drilled by mud rotary with the pump maintaining bore stability, then cased off before the bit entered competent rock.
Hard rock performance. With the DTH hammer and matched compressor on the Cotswold limestone (f8–f12), the crew recorded 15–20 m/h in the softer oolitic bands and 8–12 m/h in the harder beds. The bore reached its 150 m target in four drilling days on site — around 30% faster than the contractor had programmed — with 200 mm surface casing set and water struck in fractured limestone at roughly 120 m. The performance is consistent with YG’s field record in comparable ground: a Cebu, Philippines contractor used the same DTH configuration to complete a 120 m well in hard limestone in three days.
Running costs and logistics. With a 30 HP self-contained diesel, fuel for the day could be carried to the pad in cans — no generator, no mains supply. The contractor reported fuel consumption well below expectations, echoing feedback from other YG owners running the same model on remote irrigation and water-supply projects.
Customer Feedback and After-Sales Support
“We didn’t need trackway, we didn’t need a crane — two of us carried the rig through the gate and had it drilling within half an hour. We honestly expected a machine this size to feel underpowered; its performance in the limestone genuinely surprised us. Spare-parts support from YG has been quick when we needed it.”
— Project Manager, UK water well and groundworks contractor
The support package behind the machine:
- English operation manual plus installation and maintenance videos; the rig is designed for basic operation after 1–2 hours of training.
- Remote technical support by WhatsApp and email, with on-site technician service available for complex scenarios or larger orders.
- Consumables and wear parts — 1.5 m drill rods, DTH hammers and bits, mud pump and compressor spares — shipped by sea or air.
- CE-compliant configuration available for EU and UK markets, with certification documents provided against each order.
- Export-crate packing suited to LCL or full-container sea freight, keeping delivery costs low for a 200 kg class machine.
View the Full YG Small Water Well Drilling Rig Specifications
Frequently Asked Questions for UK Buyers: Small Water Well Drilling Rigs
A1: Yes — this is exactly what the YG-240 series is built for. The folded rig (2,000 × 1,230 × 2,090 mm for the 30P) and its modules travel in a pickup truck or small van, are carried through gateways by two workers, and are assembled on the pad in about 30 minutes. No crane or trackway is required, and the 200 kg machine causes virtually no ground damage.
A2: Each rig ships with an English manual and installation/maintenance videos. Basic operation is designed to be learned in roughly 1–2 hours, and our engineers provide remote support by WhatsApp and email. On-site commissioning or technician service can be arranged for larger orders or complex setups.
A3: Budget for drill rods (1.5 m units), a DTH hammer and rock bits, and casing. DTH drilling requires a matched air compressor, and mud rotary drilling uses the mud circulation system — YG can quote the complete package sized to your geology. Your sales engineer will list everything required for your bore design.
A4: Both YG-240 models are rated to a maximum depth of 200 m. For a 150 m, 200 mm hard-rock bore, we recommend the 30P with the DTH compressor package. This configuration has field precedent: a contractor in Cebu, Philippines, completed a 120 m well in hard limestone in three days. Actual penetration depends on rock hardness, hole diameter, and compressor capacity — share your geology log, and we will size the package.
A5: At around 200 kg and foldable, the rig ships in export crates by sea freight — LCL or full container — to UK ports such as Felixstowe or Southampton. Its small footprint keeps freight costs well below those of a full-size rig. Shipping terms, lead time, and destination port are confirmed in the quotation.
