Zion Oil & Gas Hits Lateral Depth on Israel’s Deepest Land Well

Zion Oil & Gas has drilled and cased the horizontal section of its MJ-02 well in Israel, reaching the intended lateral target depth as planned as of 3 September 2026.

For investors tracking junior unconventional explorers, this is a genuine inflection point. MJ-02 is the deepest land-based well ever drilled in Israel, and the horizontal sidetrack represents years of groundwork now arriving at the phase that will actually test whether this onshore Israeli play can deliver commercial flow. Stimulation equipment is already in transit by sea.

What follows here is not intended to overstate the moment. This is a clear account of where the program stands, what happens next, and what you should understand about the gap between a drilling milestone and a production result.

How the MJ-02 horizontal section came together, and what it took to get here

The completion announced this month did not happen in isolation. It is the latest step in a multi-year campaign that began long before the current rig ever turned to the right.

The horizontal sidetrack is a re-entry operation, built on a vertical well originally drilled back in 2021. That original well encountered hydrocarbon shows but was never commercially tested, leaving the reservoir question open for years.

The mechanics behind the MJ-02 sidetrack reflect how horizontal drilling has transformed onshore tight reservoir development across the Middle East and North Africa, where operators have used the technique to access formations that vertical wells could only partially evaluate.

The vertical foundation, 2021 to 2022

Zion Oil & Gas completed the original vertical drilling phase of MJ-02 in November 2021, reaching a depth of 5,531 metres (18,141 feet). The well encountered encouraging shows of hydrocarbons and was later confirmed as the deepest land-based well drilled in Israel.

By May 2022, the well had been fully cased and cemented. Then it sat, waiting for the capital and the plan that would eventually turn a vertical shows well into a horizontal production test.

The 2026 horizontal campaign

The rig crew arrived and rigged up over MJ-02 in January 2026, with directional equipment following. On 10 June 2026, Zion commenced the sidetrack operation: re-entering the well, drilling out a temporary plug, conditioning the wellbore, and beginning the planned horizontal drilling.

The lateral target depth was confirmed as achieved on 3 September 2026, with CEO Rob Dunn confirming the completion through a company announcement.

The sequence is worth reading as a whole:

• November 2021: Vertical drilling completed to 5,531 m
• May 2022: Well cased and cemented
• January 2026: Rig crew arrives, rig-up begins
• June 2026: Horizontal sidetrack commences
• September 2026: Lateral target depth reached

The length of that timeline tells you something important about how to read this project. This is not a fast-cycle program where results arrive within a quarter. It is a methodical, capital-intensive campaign where each milestone has been slow and hard-won, and your timeline expectations for what comes next should be calibrated accordingly.

What the stimulation phase involves and why the High Holidays interval is being used deliberately

With the horizontal section drilled and cased, the well now enters a short interim before the phase that matters most. That interim is not idle time.

Stimulation, testing, and completion operations are planned to begin after the Jewish High Holidays conclude. According to Zion, this timing was a deliberate sequencing decision: structuring the work to have equipment in position while minimising idle crew and standby costs during the holiday interval.

“The team successfully completed drilling and casing the horizontal section of the well, with the lateral target reached as planned,” confirmed Rob Dunn, Chief Executive Officer, with the company noting that a small crew will remain onsite at MJ-02 to monitor the well through the interim before next-phase operations begin.

The stimulation phase is the point of the whole exercise. It is designed to pump fluid and proppant (typically sand) at high pressure into the horizontal wellbore, creating fractures in the tight reservoir rock. Those fractures increase permeability, allowing hydrocarbons to flow toward the wellbore, after which the resulting flowback is tested to assess production potential.

The program is designed to evaluate several things at once:

• Fracture propagation into the target reservoir
• Flowback rate from the stimulated section
• Fluid character in what returns to surface
• Sustained pressure response over the test period

Equipment for the stimulation program is already in motion, loaded on a vessel bound for Israel. This is logistics underway rather than a program still waiting to be mobilised, though it is worth noting no contractor identity or specific equipment specifications have been disclosed publicly.

The deliberate cost-management framing around the holiday interval tells you Zion is operating with tight capital discipline. That matters, because the stimulation phase is the pivotal test of whether this horizontal section can produce at commercial rates. For you as an investor, the interval before stimulation begins is not dead time; it is the window in which execution and equipment logistics either stay on track or start to slip.

The financial runway behind the program and what a single well result means for a company this size

The stimulation result carries outsized weight because of the balance sheet behind it. For a company of Zion’s size, one horizontal well outcome can move the entire trajectory.

Zion’s financial profile is typical of junior resource stocks operating at the exploration frontier: a cash balance measured in single-digit millions, an annual burn rate that tracks closely with available liquidity, and a single catalyst well that concentrates commercial risk into one outcome.

As of 31 December 2025, Zion disclosed unrestricted cash and equivalents of approximately $8.3 million, total cash and bank deposits of roughly $9.9 million, and working capital of about $9.5 million. The company posted a net loss of $7.6 million for the full year 2025.

The auditors flagged substantial doubt about the company’s ability to continue as a going concern, given continuing losses and a stated dependence on raising additional capital.

Going-concern language, 2025 Form 10-K Zion’s auditors raised substantial doubt about the company’s ability to continue as a going concern, citing ongoing losses and reliance on further equity financings to fund operations.

This is structural context rather than a crisis signal. Many junior explorers carry going-concern language while they fund exploration through equity raises. But it sharpens the stakes around a single well.

In early September 2026, Zion (ticker ZNOG) traded at approximately $0.49 per share, according to MarketWatch data dated 4 September 2026, implying a market capitalisation in the region of $580 million to $584 million based on MarketBeat and Robinhood figures.

Here is the read that matters. With a full-year net loss running close to the company’s entire unrestricted cash balance, the stimulation result is not just a technical data point. It is the event most likely to determine whether Zion can raise further capital on acceptable terms in the near term. A strong flow test opens doors to financing and appraisal drilling; a weak one tightens an already constrained runway.

What a stimulation result can and cannot tell investors about MJ-02’s commercial potential

A positive result would be genuinely encouraging. It would also leave most of the commercial question unanswered, and holding both of those thoughts at once is the right posture heading into the test.

Industry experience in frontier and emerging basins is clear on one point: outcomes vary widely between similarly designed wells. An SPE paper documents nearby, similarly stimulated wells delivering very different production results, attributing the divergence to burial history and subtle geological variation. A single stimulation and flowback test delivers a data point, not a verdict on the play.

Recovery rates in unconventional reservoirs are governed by fracture network geometry, reservoir pressure, and fluid viscosity, which is why initial flow rates from a single stimulated lateral can diverge so sharply from long-run production performance and why industry experience consistently warns against extrapolating a single well result to basin-scale potential.

MJ-02 sits in Israel’s Megiddo-Jezreel licence, an onshore tight reservoir play untested by horizontal methods in this basin before now. That novelty is exactly why the result is interesting, and exactly why it should be read cautiously.

Whether a stimulation result translates into commercial potential depends on more than the initial flow number. Watch these indicators as the flowback data arrives:

• Initial flow rate from the stimulated lateral
• Sustained pressure response over extended testing
• Fluid composition, meaning the oil, water and gas ratios
• Casing integrity through the stimulation
• Stimulation coverage along the length of the lateral

Comparable frontier programs illustrate both directions. In some cases, technically successful stimulations have opened the door to further appraisal. In others, wells with strong initial promise have failed to hold up, including instances where reservoir pressure proved too low to sustain flowback despite a well-designed treatment.

A strong initial flow rate from MJ-02 would be commercially encouraging, but it would not by itself prove a repeatable play. You should treat whatever arrives as the opening data point in a multi-well appraisal story, not its conclusion.

After the High Holidays: what the MJ-02 stimulation program actually resolves

The variables are now converging into a defined near-term catalyst. The horizontal section is drilled and cased, the stimulation equipment is in transit, and the program will begin once the High Holidays conclude in September 2026.

This is a known sequence with an unknown result, which is precisely what makes the coming weeks the most information-rich window in the MJ-02 program to date.

The outcome maps directly onto the company’s options. A positive result strengthens the case for raising further appraisal capital and continuing the program. A negative or ambiguous result raises acute questions about next steps, given roughly $9.9 million in total cash against annual losses near $7.6 million.

Whatever happens, MJ-02 is the first horizontal stimulation program of its kind in the Megiddo-Jezreel licence. The result will add materially to the technical knowledge base on onshore Israeli unconventional potential, regardless of the commercial read.

Any commercial discovery at MJ-02 would sit within a broader strategic context: Israel’s regional energy infrastructure has been expanding through offshore gas monetisation, and a domestic onshore unconventional play would add a materially different supply dimension to a country that has historically been a net hydrocarbon importer.

For you, the framework matters as much as the number. Know what is being tested, know what a result means for Zion’s finances, and remember that a single well outcome, however significant, is the start of the commercial question rather than its answer.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions. Past performance does not guarantee future results. Financial projections are subject to market conditions and various risk factors. Forward-looking statements regarding the stimulation program are speculative and subject to change based on operational developments and company performance.