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Operator
Good day, everyone, and welcome to the Western Gas Third Quarter 2018 Earnings Conference Call. (Operator Instructions) And please note that today's event is being recorded.
I would now like to turn the conference over to Jon VandenBrand, Director of Investor Relations. Please go ahead with your presentation.
Jonathon E. VandenBrand - Director, IR
Thank you. I'm glad you could join us today for Western Gas' Third Quarter 2018 Conference Call.
I'd like to remind you that today's presentation includes forward-looking statements and certain non-GAAP financial measures. The accompanying slide deck and last night's earnings release contain important disclosures on forward-looking statements as well as the non-GAAP reconciliations. Please see the WES and WGP 10-Ks and other public filings for a description of the factors that could cause actual results to differ materially from what we discuss today. Those materials are all posted on the Western Gas website at www.westerngas.com.
Finally, I'd also like to highlight some of the additional health, safety, and environmental or HSE disclosure we have provided on our website. Anadarko and Western Gas have always had a strong commitment to HSE, and we'll continue to engage on these important topics.
Now I'd like to turn the call over to our CEO, Ben Fink.
Ben?
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
Thank you, Jon. And happy Halloween, everyone.
We are excited by our quarterly results, with adjusted EBITDA and distributable cash flow of $314.5 million and $248.2 million, respectively. This robust sequential growth of 16% and 12% represents the beginning of the second half ramp that we promised at the beginning of the year. Third quarter coverage of 1.08x has significantly expanded from the second quarter, and our expectation of approximately 1.2x coverage from both the fourth quarter of 2018 and full year 2019 remains unchanged.
Our natural gas throughput was driven by strong growth in the Delaware Basin, which was supported by critical midstream infrastructure coming online in the second and third quarters, as well as our large customers' proactivity in securing takeaway out of the basin. Our Ramsey facility is currently running above nameplate capacity, and we continue to see strong demand for our water services. We also saw continued volumetric growth in the DJ Basin, supported by the lowest in-basin line pressures and notably higher volumes in the Marcellus driven by increased drilling activity. This growth was partially offset by a decline in lower-margin volumes at our Chipeta plant and at our Springfield gathering system, where a part of the system was offline for over 20 days in September due to flooding from heavy rains.
Our adjusted gross margin per Mcf of $1.03 was $0.08 higher than the second quarter as our margin normalized following last quarter's accrual of shutdown costs. The growth in our crude, NGL and produced water throughput was driven by a full quarter contribution from Whitethorn as well as the ongoing volumetric ramp in our produced water gathering and disposal business. The sequential increase in our adjusted gross margin for crude, NGL and produced water assets of $0.20 to $1.76 was also a result of receiving a full quarter distribution from Whitethorn. As you saw in our release, despite the Mentone facility coming online slightly later than originally expected, our 2018 adjusted EBITDA midpoint and our distribution coverage expectations remain unchanged. We have also lowered the midpoint of our 2018 maintenance capital range while keeping our total capital expenditures outlook unchanged.
With respect to 2019, while we will release our official outlook later this year, there are 2 things we're comfortable sharing today. First, we expect significant organic growth in adjusted EBITDA of at least 20%, and second, our capital expenditures will significantly decline. We believe our unitholders are well served by this combination of significant cash flow growth and decreasing capital requirement.
As always, we appreciate all your continued support, and with that, operator, I'd like to open up the line for questions.
Operator
(Operator Instructions) And our first questioner today will be Jeremy Tonet with JPMorgan.
Jeremy Bryan Tonet - Senior Analyst
Congrats on the quarter and the '19 guide there. 20% growth, organically, is a pretty good number. I was wondering if we could build off that a bit more and kind of see how that trajectory might line up across the year. Because it seems like you have some plants coming online over the course of the year. You have some JV interest kind of come online towards the back half of the year. Is it a case where we could kind of see a steady ramp across the year? Or would you expect kind of back half of '19 to be weighted higher than first half? Or any color that you could provide there?
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
Totally appreciate the question, Jeremy. You're just going to have to be a little patient with us. We'll give full 2019 guidance later this year, and we'll talk about all the quarterly lumpiness and ramps during that time. But right here right now I can just tell you that everything seems to be trending the right way.
Jeremy Bryan Tonet - Senior Analyst
Fair enough. Pivoting to a smaller part of the story and granted the Eagle Ford is not the main driver here. But with Springfield, it was down a bit with kind of some of the activities you noted there. But just wanted to get a sense for how you see activity behind your system there. And kind of what's your most updated thoughts as far as the outlook?
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
Okay. Sure. And the quarter's volumes, as we mentioned, are really kind of weather driven. What we're dealing in the Eagle Ford is an operator who's an Eagle Ford pure play. And as I'll remind you, when we actually bought that asset at the beginning of 2016, we thought the volumes were going to be in decline for at least 3 years, and then we got back to sequential growth less than 2 years after that. So we are playing with house money. I love what the operator is doing. I love the steps that it's taking to improve its business and improve efficiencies. And I expect we'll get back to sequential growth in the near future.
Jeremy Bryan Tonet - Senior Analyst
That's helpful. And just want to think as far as what the latest size of the inventory of drop-downs upstairs would be. There's been a lot of midstream spend at APC. And clearly, with the level of organic growth that you guys have in front of you, there's no need for drops in the foreseeable future, but just wanted to kind of mark to mark that for our model.
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
Sure. And to be clear, this not really guide that we gave, this tease that we gave, does not assume any drop-downs of any kind. Just like the WES portfolio, the Anadarko midstream portfolio is a high-growth portfolio, as you would expect it would be with all the capital being spent on it and the relative immaturity of some of those assets. And we'll give an EBITDA range just like we did this year when we give full guidance.
Operator
And the next questioner today will be Spiro Dounis with Credit Suisse.
Spiro Michael Dounis - Director
I wanted to start off on CapEx, if we could. And I don't want to get too out of your 2019 guidance coming up in the next month or so, but it sounds like maybe it could take a material step down from '18 and I just wondered. Do you see that going higher if the market strengthens from here? Really just trying to get a sense for, I guess, how much capacity or appetite you guys have to keep spending elevated if things remain really tight.
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
No. First of all, Spiro, welcome to the family. And the answer, the short answer, is no. You might recall that our strategy when we started our 2-year capital plan last year was to size pipe today to size it for the future. And so what we did is we accelerated some of that CapEx just for these purposes, that even if there's more producer activity, we will not have to loop lines and therefore can still have declining capital expenditures even with increased activity.
Spiro Michael Dounis - Director
Got it. Got it. Okay. And then you mentioned this in your prepared remarks, but obviously, the delays in Mentone didn't really do anything to your guidance. Midpoint stayed the same. Just curious if that was a function of you guys building in some conservatism there. Or is the underlying business just coming in stronger than expected?
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
Well, I mean, it's not a material delay. You're talking about our expectation of the end of the third quarter, and so we're really only looking at a few weeks after that. And so between that and the fact that we had a range to begin with, it just didn't have a huge impact.
Spiro Michael Dounis - Director
Okay. That's fair. One more if I could. I'm sure you guys know you get asked this every quarter, and so I don't want to break trend. But I guess, has there been any movement around simplification or addressing the IDRs?
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
Just like Jeremy's question, totally understand your need to ask, but we have nothing new to say on that topic at this time.
Operator
The next questioner today will be Jerren Holder with Goldman Sachs.
Jerren Holder - Associate
Just wanted to go back, maybe, to the guidance of at least 20%. And just want to know, how does that factor in the Colorado election coming up?
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
That's a great question, and obviously, we're not in a position to speculate on the election, but we're confident enough in that number that, regardless of outcome, we feel like that's something we can meet.
Jerren Holder - Associate
Great. And then, maybe, switching to the distribution growth outlook as we look to next year. I saw you guys broke out the 9% number for 2019. How should we think about that just given that many other companies have moved to slower growth rates, retaining more cash? How are you guys thinking about distribution growth in general?
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
Totally fair question, and when we give '19 guidance, we will address that in detail.
Operator
And our next questioner today will be Colton Bean with Tudor, Pickering, Holt.
Colton Westbrooke Bean - Director of Midstream Research
So Ben, on the 2019 outlook of 20%, any rough breakout of how much of that is underpinned by the respective basins?
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
Well, we can give more than a rough breakout when we give guidance. But it shouldn't surprise you at all that Delaware is the high-growth entity. It's where we've spent the bulk of our capital. It's where those volumes are really starting to ramp with all that critical infrastructure coming online. But if you want capital by basin, which we give in our normal guidance, you're just going to have to wait just a few more short weeks.
Colton Westbrooke Bean - Director of Midstream Research
Got it. And then it sounds like in the commentary there that really the 2019 expectations are largely underpinned by existing DJ permit, so no -- at least, muted risk to 2019. It'd really be a longer-dated consideration if anything were to change.
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
I think that's fair.
Colton Westbrooke Bean - Director of Midstream Research
Got it. And just a final one. So Powder River development, it's been on the drawing board for a few quarters now. So if 2019 is largely underpinned by Delaware and existing DJ permits, is there potential for the PRB to be a meaningful contributor by 2020? In a great state of the world, that's adding a third leg to the stool. And maybe a downside case, that's mitigating some of the issues in the DJ.
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
Potential, yes, but there's absolutely nothing in our forecasts that gives us confidence around that 20% number.
Colton Westbrooke Bean - Director of Midstream Research
Okay. So thinking more so on a 2020 basis.
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
Yes. There's upside there.
Operator
The next questioner today will be Sharon Lui with Wells Fargo.
Sharon Lui - Senior Equity Analyst
Just a couple of, I guess, housekeeping questions. In terms of Cactus II payments this year, are you expecting any additional payments?
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
Sharon, I'm going to let Jaime take that one.
Jaime R. Casas - Senior VP, CFO & Treasurer of Western Gas Holdings, LLC
Yes. On Cactus II, that isn't expected to go into service until next year -- capital. We have some expected ongoing capital calls that'll probably go through the balance of the year, into the fourth quarter. And usually, as it is normal practice, as it ramps up into the third and fourth quarters based on Plains' guidance, we'll continue to pay our share there.
Sharon Lui - Senior Equity Analyst
Okay. And then, I guess, the impairment charge of $24 million this year, is that fully weighted to systems discussed last quarter?
Jaime R. Casas - Senior VP, CFO & Treasurer of Western Gas Holdings, LLC
Yes, this is Jaime again. About $7 million of that is related to the 2 systems that we shut down earlier this year.
Sharon Lui - Senior Equity Analyst
Okay. And it sounds like, I guess, based on your remarks, that even if prop 112 does go through and there's a shift, I guess, in Anadarko's rigs to the Delaware and PRB, that your CapEx outlook for 2019 wouldn't really change that much to support that activity.
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
That's an interesting question as it relates to capital, and that's probably why we weren't as specific with the capital number as we were with the EBITDA number. So I'll just reiterate as were. There's enough existing growth in what we see as even a low-case 2019 activity that we can achieve that 20% EBITDA. We'll give more guidance on capital when we get on the other side of next week.
Operator
The next questioner today will be Mirek Zak with Citigroup.
Mirek Zak - Senior Associate
Just one quick one for me, and it kind of builds on to Colton's question. If you -- hypothetically things didn't go the way you'd hoped on prop 112 and you see some DJ producers shift capital elsewhere, such as Anadarko specifically commenting on the Powder River -- I know you currently have a position there today, but in general, what would be your ability and appetite to support meaningful infrastructure buildout in other basins for APC or other DJ customers, perhaps in basins that aren't really your key focus regions at this time?
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
Mirek, I think, to echo Anadarko's comments this morning, their strength is in their diversity. They are not a single-basin pure play. And they have the optionality to move rigs to other basins, should it be required. We, as their midstream arm, have that same optionality to follow them and hook up those wells and process the gas and/or oil and [wander] where they may go. And so we have that same inherent flexibility inherent in our business. Would we follow those rigs? Of course, we would. The question -- your question may be more of third-party business, and that's strictly the facts and circumstances of that third-party opportunity. But we would never say never, but certainly, our MO, if you will, would be to follow those Anadarko rigs if they had to go somewhere.
Operator
And our next questioner today will be Kyle May with Capital One Securities.
Kyle May - Associate
I was wondering if we could start out. I know '19 CapEx is not official yet, but can you just give us a reminder on how much capital remain for the projects that you've already announced? And then maybe a follow-on, give us a sense of how much more infrastructure is needed in the Delaware to support Anadarko's activity as they transition to development mode.
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
Okay, I'll start, and then I may hand over for some additional detail. Mentone I is largely done, right? You're talking about commissioning being underway and startup in the next few weeks. With Mentone II in the first quarter, I would say the bulk of it has been completed, but there's still a decent chunk of capital there. In terms of our '19 plans, which we'll address in more detail when we give guidance, I would say the bulk of the CapEx would be spent next year as opposed [this year], and those are the major projects.
Kyle May - Associate
Okay, got it. And switching over to the crude, NGL and water segment. Adjusted gross margin had a nice rebound when you look at the per-barrel contribution this quarter. What's your outlook for that as we move forward?
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
I'll let Jaime take that.
Jaime R. Casas - Senior VP, CFO & Treasurer of Western Gas Holdings, LLC
Yes. The outlook on that would be, as the water volumes continue to increase, we would expect that margin, on average, to continue to decline. But that's just because the water business, even though it generates higher returns, it's a lower-margin business on a dollar-per-barrel basis.
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
It's a gathering business instead of a long-haul transportation [business].
Kyle May - Associate
Okay. And any context around how much water is -- or how much, on a percentage basis, water make up that segment?
Jaime R. Casas - Senior VP, CFO & Treasurer of Western Gas Holdings, LLC
Well, today, we have a 120,000-barrel capacity on the water business. We expect that to grow to about 180,000 by the end of next year. And then it's going to be a function of how that ramps up relative to the crude and NGL businesses and lines that we have.
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
It's in the 20% to 25% range today, volume.
Operator
And the next questioner today will be Dennis Coleman with Bank of America Merrill Lynch.
Dennis Paul Coleman - Global Head of High Grade Debt Research and MD
Just, Ben, if you could, back to prop 112. I know there's -- we're sort of sitting here a week away, and there's no sense in talking about the outcome, but can you talk maybe a little bit about Colorado as a market and just the idea that this is a second election in a row where we've had these issues. And if the results come out and there's 40% of the population that does support something like this, it's hard to imagine that you don't see this again 2 years down the road and 2 years down the road after that. How do you think about that but maybe in the longer term as you think about Colorado?
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
Sure, Dennis. And I'll really echo Anadarko's comments this morning, which is regardless of the outcome, there's still work to do, right? There's work to be done with the new administration, the new legislature. And so whatever happens next week is more of a beginning than a chapter closing. And I think we can be a little more detailed about those activities once we give full guidance and we know exactly what the situation is on the ground.
Dennis Paul Coleman - Global Head of High Grade Debt Research and MD
Okay. And then just one housekeeping for me. The options on Red Bluff and Cheyenne Connector, obviously, are -- 3 more months just passed. Any other incremental thoughts there?
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
We'll need to make an announcement one way or the other on Red Bluff in the fourth quarter. So watch this space. And then in the first quarter of '19, we'll have to decide on the other option.
Operator
And the next questioner today will be Spiro Dounis with Credit Suisse.
Spiro Michael Dounis - Director
I just had one follow-up on the options actually. So obviously, you have these two in the hopper now. And I know Jeremy asked about, I guess, the drop-down inventory before. But if we could sort of think about it in terms of an option inventory, do you guys foresee being able to replenish the options going forward? It seems like a really good sort of capital-efficient way to facilitate growth.
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
We would agree with that assessment, for starters. We are very fortunate that our sponsor has both the willingness and the commercial wherewithal to negotiate these types of options when they make commitments, and so to the extent there are future commitments to be made, we know we will at least ask the question and should have some leverage in that negotiation. The options that we have been -- that we are allowed to disclose, we have disclosed, and so there's really not much else we can say about other potential specific projects at this time.
Operator
And this will conclude our question-and-answer session. I would like to turn the conference back over to Benjamin Fink for any closing remarks.
Benjamin M. Fink - President, CEO & Director of Western Gas Holdings, LLC
Thank you, everyone, for your support and your participation. And please be safe while trick-or-treating tonight. Have a great day.
Operator
The conference has now concluded. Thank you for attending today's presentation, and you may now disconnect your lines.